Sodium Bicarbonate Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations Date of issue: 02/21/2007 Revision date: 03/13/2018 Supersedes: 03/13/2018 Version: 1.1 03/13/2018

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EN (English US) Page 1 SECTION 1: Identification 1.1. Identification Product form : Substance Substance name : Sodium Bicarbonate Chemical name : Sodium Hydrogen Carbonate CAS-No. : 144-55-8 Product code : LC22943 Formula : NaHCO3 1.2. Recommended use and restrictions on use Use of the substance/mixture : For laboratory and manufacturing use only. Recommended use : Laboratory chemicals Restrictions on use : Not for food, drug or household use 1.3. Supplier LabChem Inc Jackson’s Pointe Commerce Park Building 1000, 1010 Jackson’s Pointe Court Zelienople, PA 16063 – USA T 412-826-5230 – F 724-473-0647 [email protected] – www.labchem.com 1.4. Emergency telephone number Emergency number : CHEMTREC: 1-800-424-9300 or 011-703-527-3887 SECTION 2: Hazard(s) identification 2.1. Classification of the substance or mixture GHS-US classification Serious eye damage/eye irritation Category 2B H320 Causes eye irritation Full text of H statements : see section 16 2.2. GHS Label elements, including precautionary statements GHS-US labeling Signal word (GHS-US) : Warning Hazard statements (GHS-US) : H320 – Causes eye irritation Precautionary statements (GHS-US) : P264 – Wash exposed skin thoroughly after handling. P305+P351+P338 – If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P337+P313 – If eye irritation persists: Get medical advice/attention. 2.3. Other hazards which do not result in classification Other hazards not contributing to the classification : None. 2.4. Unknown acute toxicity (GHS US) Not applicable SECTION 3: Composition/Information on ingredients 3.1. Substances Substance type : Mono-constituent Name Product identifier % GHS-US classification Sodium Bicarbonate (Main constituent) (CAS-No.) 144-55-8 100 Eye Irrit. 2B, H320 Full text of hazard classes and H-statements : see section 16 3.2. Mixtures Not applicable

Sodium Bicarbonate Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/13/2018 EN (English US) 2/6 SECTION 4: First-aid measures 4.1. Description of first aid measures First-aid measures general : Never give anything by mouth to an unconscious person. If you feel unwell, seek medical advice (show the label where possible). First-aid measures after inhalation : Allow victim to breathe fresh air. Allow the victim to rest. First-aid measures after skin contact : Remove affected clothing and wash all exposed skin area with mild soap and water, followed by warm water rinse. First-aid measures after eye contact : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. First-aid measures after ingestion : Rinse mouth. Do NOT induce vomiting. Obtain emergency medical attention. 4.2. Most important symptoms and effects (acute and delayed) Symptoms/effects after eye contact : Causes eye irritation. 4.3. Immediate medical attention and special treatment, if necessary No additional information available SECTION 5: Fire-fighting measures 5.1. Suitable (and unsuitable) extinguishing media Suitable extinguishing media : Foam. Dry powder. Carbon dioxide. Water spray. Sand. Unsuitable extinguishing media : Do not use a heavy water stream. 5.2. Specific hazards arising from the chemical No additional information available 5.3. Special protective equipment and precautions for fire-fighters Firefighting instructions : Use water spray or fog for cooling exposed containers. Exercise caution when fighting any chemical fire. Prevent fire-fighting water from entering environment. Protection during firefighting : Do not enter fire area without proper protective equipment, including respiratory protection. SECTION 6: Accidental release measures 6.1. Personal precautions, protective equipment and emergency procedures 6.1.1. For non-emergency personnel Protective equipment : Safety glasses. Gloves. Emergency procedures : Evacuate unnecessary personnel. 6.1.2. For emergency responders Protective equipment : Equip cleanup crew with proper protection. Emergency procedures : Ventilate area. 6.2. Environmental precautions Prevent entry to sewers and public waters. Notify authorities if liquid enters sewers or public waters. 6.3. Methods and material for containment and cleaning up Methods for cleaning up : On land, sweep or shovel into suitable containers. Minimize generation of dust. Store away from other materials. 6.4. Reference to other sections See Heading 8. Exposure controls and personal protection. SECTION 7: Handling and storage 7.1. Precautions for safe handling Precautions for safe handling : Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work. Provide good ventilation in process area to prevent formation of vapor. 7.2. Conditions for safe storage, including any incompatibilities Storage conditions : Keep cool. Keep container closed when not in use. Incompatible products : Strong oxidizers. Strong acids. Incompatible materials : Moisture. Heat sources.

Sodium Bicarbonate Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/13/2018 EN (English US) 3/6 SECTION 8: Exposure controls/personal protection 8.1. Control parameters No additional information available 8.2. Appropriate engineering controls Appropriate engineering controls : Emergency eye wash fountains should be available in the immediate vicinity of any potential exposure. Provide adequate general and local exhaust ventilation. 8.3. Individual protection measures/Personal protective equipment Personal protective equipment: Gloves. Safety glasses. Hand protection: Wear protective gloves. Eye protection: Chemical goggles or safety glasses Respiratory protection: Respiratory protection not required in normal conditions Other information: Do not eat, drink or smoke during use. SECTION 9: Physical and chemical properties 9.1. Information on basic physical and chemical properties Physical state : Solid Appearance : Powder. Color : white Odor : None. Odor threshold : No data available pH : 8.3 0.1M solution Melting point : 270 °C Freezing point : No data available Boiling point : No data available Flash point : No data available Relative evaporation rate (butyl acetate=1) : No data available Flammability (solid, gas) : Non flammable. Vapor pressure : No data available Relative vapor density at 20 °C : No data available Relative density : No data available Specific gravity / density : 2.159 g/cm³ Molecular mass : 84.01 g/mol Solubility : Soluble in water. Water: 6.9 g/100ml Log Pow : No data available Auto-ignition temperature : No data available Decomposition temperature : > 50 °C

Sodium Bicarbonate Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/13/2018 EN (English US) 4/6 Viscosity, kinematic : No data available Viscosity, dynamic : No data available Explosion limits : No data available Explosive properties : Not applicable. Oxidizing properties : None. 9.2. Other information No additional information available SECTION 10: Stability and reactivity 10.1. Reactivity No additional information available 10.2. Chemical stability Stable under normal conditions. 10.3. Possibility of hazardous reactions Reacts vigorously with strong oxidizers and acids. 10.4. Conditions to avoid Moisture. Incompatible materials. High temperature. 10.5. Incompatible materials Strong acids. Strong oxidizers. 10.6. Hazardous decomposition products Carbon monoxide. Carbon dioxide. SECTION 11: Toxicological information 11.1. Information on toxicological effects Likely routes of exposure : Ingestion; Inhalation; Skin and eye contact Acute toxicity : Not classified Sodium Bicarbonate (144-55-8) LD50 oral rat 4220 mg/kg ATE US (oral) 4220 mg/kg body weight Skin corrosion/irritation : Not classified pH: 8.3 0.1M solution Serious eye damage/irritation : Causes eye irritation. pH: 8.3 0.1M solution Respiratory or skin sensitization : Not classified Germ cell mutagenicity : Not classified Carcinogenicity : Not classified Reproductive toxicity : Not classified Specific target organ toxicity – single exposure : Not classified Specific target organ toxicity – repeated exposure : Not classified Aspiration hazard : Not classified Potential Adverse human health effects and symptoms : Based on available data, the classification criteria are not met. Symptoms/effects after eye contact : Causes eye irritation. SECTION 12: Ecological information 12.1. Toxicity Sodium Bicarbonate (144-55-8) LC50 fish 1 8250 – 9000 mg/l EC50 Daphnia 1 2350 mg/l

Sodium Bicarbonate Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/13/2018 EN (English US) 5/6 12.2. Persistence and degradability Sodium Bicarbonate (144-55-8) Persistence and degradability Not established. 12.3. Bioaccumulative potential Sodium Bicarbonate (144-55-8) Bioaccumulative potential Not established. 12.4. Mobility in soil No additional information available 12.5. Other adverse effects Other information : Avoid release to the environment. SECTION 13: Disposal considerations 13.1. Disposal methods Waste disposal recommendations : Dispose in a safe manner in accordance with local/national regulations. Ecology – waste materials : Avoid release to the environment. SECTION 14: Transport information Department of Transportation (DOT) In accordance with DOT Not regulated SECTION 15: Regulatory information 15.1. US Federal regulations Sodium Bicarbonate (144-55-8) Listed on the United States TSCA (Toxic Substances Control Act) inventory SARA Section 311/312 Hazard Classes Immediate (acute) health hazard All components of this product are listed, or excluded from listing, on the United States Environmental Protection Agency Toxic Substances Control Act (TSCA) inventory 15.2. International regulations CANADA Sodium Bicarbonate (144-55-8) Listed on the Canadian DSL (Domestic Substances List) EU-Regulations No additional information available National regulations Sodium Bicarbonate (144-55-8) Not listed on the Canadian IDL (Ingredient Disclosure List) 15.3. US State regulations California Proposition 65 – This product does not contain any substances known to the state of California to cause cancer, developmental and/or reproductive harm SECTION 16: Other information Revision date : 03/13/2018 Other information : None. Full text of H-phrases: see section 16: — — H320 Causes eye irritation

Sodium Bicarbonate Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/13/2018 EN (English US) 6/6 NFPA health hazard : 2 – Materials that, under emergency conditions, can cause temporary incapacitation or residual injury. NFPA fire hazard : 0 – Materials that will not burn under typical dire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. NFPA reactivity : 1 – Materials that in themselves are normally stable but can become unstable at elevated temperatures and pressures. Hazard Rating Health : 2 Moderate Hazard – Temporary or minor injury may occur Flammability : 0 Minimal Hazard – Materials that will not burn Physical : 1 Slight Hazard – Materials that are normally stable but can become unstable (self-react) at high temperatures and pressures. Materials may react non-violently with water or undergo hazardous polymerization in the absence of inhibitors. Personal protection : E E – Safety glasses, Gloves, Dust respirator SDS US LabChem Information in this SDS is from available published sources and is believed to be accurate. No warranty, express or implied, is made and LabChem Inc assumes no liability resulting from the use of this SDS. The user must determine suitability of this information for his application.

Sodium Carbonate, Anhydrous Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations Date of issue: 05/13/2013 Revision date: 03/20/2018 Supersedes: 03/20/2018 Version: 1.2

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03/20/2018 EN (English US) Page 1 SECTION 1: Identification 1.1. Identification Product form : Substance Substance name : Sodium Carbonate, Anhydrous CAS-No. : 497-19-8 Product code : LC22965 Formula : Na2CO3 1.2. Recommended use and restrictions on use Use of the substance/mixture : For laboratory and manufacturing use only. Recommended use : Laboratory chemicals Restrictions on use : Not for food, drug or household use 1.3. Supplier LabChem Inc Jackson’s Pointe Commerce Park Building 1000, 1010 Jackson’s Pointe Court Zelienople, PA 16063 – USA T 412-826-5230 – F 724-473-0647 [email protected] www.labchem.com 1.4. Emergency telephone number Emergency number : CHEMTREC: 1-800-424-9300 or +1-703-741-5970 SECTION 2: Hazard(s) identification 2.1. Classification of the substance or mixture GHS-US classification Skin corrosion/irritation Category 2 H315 Causes skin irritation Serious eye damage/eye irritation Category 2A H319 Causes serious eye irritation Full text of H statements : see section 16 2.2. GHS Label elements, including precautionary statements GHS-US labeling Hazard pictograms (GHS-US) : GHS07 Signal word (GHS-US) : Warning Hazard statements (GHS-US) : H315 – Causes skin irritation H319 – Causes serious eye irritation Precautionary statements (GHS-US) : P264 – Wash exposed skin thoroughly after handling. P280 – Wear eye protection, protective gloves. P302+P352 – IF ON SKIN: Wash with plenty of soap and water. P305+P351+P338 – If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P332+P313 – If skin irritation occurs: Get medical advice/attention. P337+P313 – If eye irritation persists: Get medical advice/attention. P362 – Take off contaminated clothing and wash before reuse. 2.3. Other hazards which do not result in classification Other hazards not contributing to the classification : None. 2.4. Unknown acute toxicity (GHS US) Not applicable  Sodium Carbonate, Anhydrous Safety Data Sheet
according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/20/2018 EN (English US) 2/6 SECTION 3: Composition/Information on ingredients 3.1. Substances Substance type : Mono-constituent Name Product identifier % GHS-US classification Sodium Carbonate, Anhydrous (Main constituent) (CAS-No.) 497-19-8 100 Skin Irrit. 2, H315 Eye Irrit. 2A, H319 Full text of hazard classes and H-statements : see section 16 3.2. Mixtures Not applicable SECTION 4: First-aid measures 4.1. Description of first aid measures First-aid measures general : Never give anything by mouth to an unconscious person. If you feel unwell, seek medical advice (show the label where possible). First-aid measures after inhalation : Allow victim to breathe fresh air. Allow the victim to rest. First-aid measures after skin contact : Wash with plenty of soap and water. Wash contaminated clothing before reuse. If skin irritation occurs: Get medical advice/attention. Get medical advice/attention. First-aid measures after eye contact : Rinse immediately with plenty of water. Obtain medical attention if pain, blinking or redness persists. First-aid measures after ingestion : Rinse mouth. Do NOT induce vomiting. Obtain emergency medical attention. 4.2. Most important symptoms and effects (acute and delayed) Symptoms/effects after inhalation : Coughing. Symptoms/effects after skin contact : Causes skin irritation. Symptoms/effects after eye contact : Causes serious eye irritation. Symptoms/effects after ingestion : Vomiting. Nausea. Chronic symptoms : Not available. 4.3. Immediate medical attention and special treatment, if necessary None. SECTION 5: Fire-fighting measures 5.1. Suitable (and unsuitable) extinguishing media Suitable extinguishing media : Foam. Dry powder. Carbon dioxide. Water spray. Sand. Unsuitable extinguishing media : Do not use a heavy water stream. 5.2. Specific hazards arising from the chemical Fire hazard : Non combustible. Explosion hazard : Not applicable. Reactivity : Reacts with (some) acids. 5.3. Special protective equipment and precautions for fire-fighters Firefighting instructions : Use water spray or fog for cooling exposed containers. Exercise caution when fighting any chemical fire. Prevent fire-fighting water from entering environment.
Protection during firefighting : Do not enter fire area without proper protective equipment, including respiratory protection. SECTION 6: Accidental release measures 6.1. Personal precautions, protective equipment and emergency procedures General measures : None. 6.1.1. For non-emergency personnel Emergency procedures : Evacuate unnecessary personnel. 6.1.2. For emergency responders Protective equipment : Equip cleanup crew with proper protection. Emergency procedures : Ventilate area. 6.2. Environmental precautions Prevent entry to sewers and public waters. Notify authorities if liquid enters sewers or public waters.

Sodium Carbonate, Anhydrous Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/20/2018 EN (English US) 3/6 6.3. Methods and material for containment and cleaning up Methods for cleaning up : On land, sweep or shovel into suitable containers. Minimize generation of dust. Store away from other materials. 6.4. Reference to other sections See Heading 8. Exposure controls and personal protection. SECTION 7: Handling and storage 7.1. Precautions for safe handling Precautions for safe handling : Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work. Provide good ventilation in process area to prevent formation
of vapor. Hygiene measures : Wash exposed skin thoroughly after handling. 7.2. Conditions for safe storage, including any incompatibilities Storage conditions : Keep only in the original container in a cool, well ventilated place away from : incompatible materials. Keep container closed when not in use. Incompatible products : Strong bases. Strong acids. Incompatible materials : Sources of ignition. Direct sunlight. SECTION 8: Exposure controls/personal protection 8.1. Control parameters No additional information available 8.2. Appropriate engineering controls Appropriate engineering controls : Emergency eye wash fountains should be available in the immediate vicinity of any potential exposure. 8.3. Individual protection measures/Personal protective equipment Personal protective equipment: Gloves. Safety glasses. Hand protection: Wear protective gloves. Eye protection: Chemical goggles or safety glasses Skin and body protection:  Wear suitable protective clothing Respiratory protection: Respiratory protection not required in normal conditions Other information: Do not eat, drink or smoke during use. SECTION 9: Physical and chemical properties 9.1. Information on basic physical and chemical properties Physical state : Solid Appearance : White powder or lumps. Color : white

Sodium Carbonate, Anhydrous Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/20/2018 EN (English US) 4/6 Odor : odorless Odor threshold : No data available pH : 11.6 Melting point : No data available Freezing point : No data available Boiling point : 1600 °C Flash point : No data available Relative evaporation rate (butyl acetate=1) : No data available Flammability (solid, gas) : Non flammable. Vapor pressure : No data available Relative vapor density at 20 °C : No data available Relative density : No data available Specific gravity / density : 2.53 g/cm³ Molecular mass : 105.99 g/mol Solubility : No data available Log Pow : No data available Auto-ignition temperature : No data available Decomposition temperature : No data available Viscosity, kinematic : No data available Viscosity, dynamic : No data available Explosion limits : No data available Explosive properties : Not applicable. Oxidizing properties : None. 9.2. Other information No additional information available SECTION 10: Stability and reactivity 10.1. Reactivity Reacts with (some) acids. 10.2. Chemical stability Not established. 10.3. Possibility of hazardous reactions Not established. 10.4. Conditions to avoid Direct sunlight. Extremely high or low temperatures. 10.5. Incompatible materials Strong acids. Strong bases. 10.6. Hazardous decomposition products fume. Carbon monoxide. Carbon dioxide. SECTION 11: Toxicological information 11.1. Information on toxicological effects Likely routes of exposure : Inhalation; Skin and eye contact Acute toxicity : Not classified Sodium Carbonate, Anhydrous (497-19-8) LD50 oral rat 4090 mg/kg ATE US (oral) 4090 mg/kg body weight Skin corrosion/irritation : Causes skin irritation. pH: 11.6

Sodium Carbonate, Anhydrous Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/20/2018 EN (English US) 5/6 Serious eye damage/irritation : Causes serious eye irritation. pH: 11.6 Respiratory or skin sensitization : Not classified Germ cell mutagenicity : Not classified Based on available data, the classification criteria are not met Carcinogenicity : Not classified Reproductive toxicity : Not classified Based on available data, the classification criteria are not met Specific target organ toxicity – single exposure : Not classified Specific target organ toxicity – repeated exposure : Not classified Aspiration hazard : Not classified Potential Adverse human health effects and symptoms : Based on available data, the classification criteria are not met. Symptoms/effects after inhalation : Coughing. Symptoms/effects after skin contact : Causes skin irritation. Symptoms/effects after eye contact : Causes serious eye irritation. Symptoms/effects after ingestion : Vomiting. Nausea.Chronic symptoms : Not available. SECTION 12: Ecological information 12.1. Toxicity Sodium Carbonate, Anhydrous (497-19-8) LC50 fish 1 300 mg/l EC50 Daphnia 1 265 mg/l LC50 fish 2 740 mg/l 12.2. Persistence and degradability Sodium Carbonate, Anhydrous (497-19-8) Persistence and degradability Not established. 12.3. Bioaccumulative potential Sodium Carbonate, Anhydrous (497-19-8) Bioaccumulative potential Not established. 12.4. Mobility in soil No additional information available 12.5. Other adverse effects Other information : Avoid release to the environment. SECTION 13: Disposal considerations 13.1. Disposal methods Waste disposal recommendations : Dispose in a safe manner in accordance with local/national regulations. Ecology – waste materials : Avoid release to the environment. SECTION 14: Transport information Department of Transportation (DOT) In accordance with DOT Not regulated

Sodium Carbonate, Anhydrous Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 03/20/2018 EN (English US) 6/6 SECTION 15: Regulatory information
15.1. US Federal regulations Sodium Carbonate, Anhydrous (497-19-8) Listed on the United States TSCA (Toxic Substances Control Act) inventory All components of this product are listed, or excluded from listing, on the United States Environmental Protection Agency Toxic Substances Control Act (TSCA) inventory 15.2. International regulations CANADA Sodium Carbonate, Anhydrous (497-19-8) Listed on the Canadian DSL (Domestic Substances List) EU-Regulations No additional information available National regulations Sodium Carbonate, Anhydrous (497-19-8) Listed on the Canadian IDL (Ingredient Disclosure List) 15.3. US State regulations California Proposition 65 – This product does not contain any substances known to the state of California to cause cancer, developmental and/or reproductive harm SECTION 16: Other information Revision date : 03/20/2018 Other information : None. Full text of H-phrases: see section 16: — — H315 Causes skin irritation — — H319 Causes serious eye irritation NFPA health hazard : 1 – Materials that, under emergency conditions, can cause significant irritation. NFPA fire hazard : 0 – Materials that will not burn under typical dire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. NFPA reactivity : 0 – Material that in themselves are normally stable, even under fire conditions. Hazard Rating Health : 1 Slight Hazard – Irritation or minor reversible injury possible Flammability : 0 Minimal Hazard – Materials that will not burn Physical : 0 Minimal Hazard – Materials that are normally stable, even under fire conditions, and will NOT
react with water, polymerize, decompose, condense, or self-react. Non-Explosives. Personal protection : B B – Safety glasses, Gloves SDS US LabChem Information in this SDS is from available published sources and is believed to be accurate. No warranty, express or implied, is made and LabChem Inc assumes no liability resulting from the use of this SDS. The user must determine suitability of this information for his application.

Sodium Hypochlorite SDS, 5% w/v Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations Date of issue: 11/14/2013 Version: 1.0 11/19/2013 EN (English)

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Sodium Hypochlorite SDS Page 1 SECTION 1: Identification of the substance/mixture and of the company/undertaking 1.1. Product identifier Product form : Mixture Product name : Sodium Hypochlorite, 5% w/v CAS No : 7681-52-9 Product code : LC24630 Formula : NaOCl 1.2. Relevant identified uses of the substance or mixture and uses advised against Use of the substance/mixture : For laboratory and manufacturing use only. 1.3. Details of the supplier of the safety data sheet LabChem Inc Jackson’s Pointe Commerce Park Building 1000, 1010 Jackson’s Pointe Court Zelienople, PA 16063 – USA T 412-826-5230 – F 724-473-0647 [email protected] – www.labchem.com 1.4. Emergency telephone number Emergency number : CHEMTREC: 1-800-424-9300 or 011-703-527-3887 SECTION 2: Hazards identification 2.1. Classification of the substance or mixture GHS-US classification Skin Irrit. 2 H315 Eye Dam. 1 H318 Aquatic Acute 2 H401 2.2. Label elements GHS-US labelling Hazard pictograms (GHS-US) : GHS05 Signal word (GHS-US) : Danger Hazard statements (GHS-US) : H315 – Causes skin irritation H318 – Causes serious eye damage H401 – Toxic to aquatic life Precautionary statements (GHS-US) : P264 – Wash exposed skin thoroughly after handling P273 – Avoid release to the environment P280 – Wear protective gloves, protective clothing, eye protection, face protection P302+P352 – IF ON SKIN: Wash with plenty of soap and water P305+P351+P338 – If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P310 – Immediately call a POISON CENTER or doctor/physician P332+P313 – If skin irritation occurs: Get medical advice/attention P362 – Take off contaminated clothing P501 – Dispose of contents/container to comply with local, state and federal regulations 2.3. Other hazards Other hazards not contributing to the classification : None. 2.4. Unknown acute toxicity (GHS-US) No data available Sodium Hypochlorite, 5% w/v Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 11/19/2013 EN (English)

Sodium Hypochlorite SDS 2/7 SECTION 3: Composition/information on ingredients 3.1. Substance Not applicable Full text of H-phrases: see section 16 3.2. Mixture Name Product identifier % GHS-US classification Water (CAS No) 7732-18-5 95 Not classified Sodium Hypochlorite (CAS No) 7681-52-9 5 Unst. Expl, H200 Ox. Sol. 2, H272 Skin Corr. 1B, H314 STOT SE 3, H335 Aquatic Acute 1, H400 SECTION 4: First aid measures 4.1. Description of first aid measures First-aid measures general : Never give anything by mouth to an unconscious person. If you feel unwell, seek medical advice (show the label where possible). First-aid measures after inhalation : Assure fresh air breathing. Allow the victim to rest. First-aid measures after skin contact : Wash with plenty of soap and water. Wash contaminated clothing before reuse. If skin irritation occurs: Get medical advice/attention. First-aid measures after eye contact : Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. First-aid measures after ingestion : Rinse mouth. Do NOT induce vomiting. Obtain emergency medical attention. 4.2. Most important symptoms and effects, both acute and delayed Symptoms/injuries after skin contact : Causes skin irritation. Symptoms/injuries after eye contact : Causes serious eye damage. 4.3. Indication of any immediate medical attention and special treatment needed No additional information available SECTION 5: Firefighting measures 5.1. Extinguishing media Suitable extinguishing media : Foam. Dry powder. Carbon dioxide. Water spray. Sand. Unsuitable extinguishing media : Do not use a heavy water stream. 5.2. Special hazards arising from the substance or mixture No additional information available 5.3. Advice for firefighters Firefighting instructions : Use water spray or fog for cooling exposed containers. Exercise caution when fighting any chemical fire. Avoid (reject) fire-fighting water to enter environment. Protection during firefighting : Do not enter fire area without proper protective equipment, including respiratory protection. SECTION 6: Accidental release measures 6.1. Personal precautions, protective equipment and emergency procedures 6.1.1. For non-emergency personnel Protective equipment : Safety glasses. Protective clothing. Gloves. Emergency procedures : Evacuate unnecessary personnel. 6.1.2. For emergency responders Protective equipment : Equip cleanup crew with proper protection. Emergency procedures : Ventilate area. 6.2. Environmental precautions Prevent entry to sewers and public waters. Notify authorities if liquid enters sewers or public waters. Avoid release to the environment. 6.3. Methods and material for containment and cleaning up Methods for cleaning up : Soak up spills with inert solids, such as clay or diatomaceous earth as soon as possible. Collect spillage. Store away from other materials. Sodium Hypochlorite, 5% w/v Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 11/19/2013 EN (English)

Sodium Hypochlorite SDS 3/7 6.4. Reference to other sections See Heading 8. Exposure controls and personal protection. SECTION 7: Handling and storage 7.1. Precautions for safe handling Precautions for safe handling : Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work. Provide good ventilation in process area to prevent formation of vapour. Hygiene measures : Wash exposed skin thoroughly after handling. 7.2. Conditions for safe storage, including any incompatibilities Storage conditions : Keep only in the original container in a cool, well ventilated place away from : incompatible materials. Keep container closed when not in use. Incompatible products : Strong reducing agents. combustible materials. aluminium. metals. Ammonia. Strong acids. Incompatible products : Sources of ignition. Direct sunlight. 7.3. Specific end use(s) No additional information available SECTION 8: Exposure controls/personal protection 8.1. Control parameters 8.2. Exposure controls Appropriate engineering controls : Emergency eye wash fountains and safety showers should be available in the immediate vicinity of any potential exposure. Provide adequate general and local exhaust ventilation. Personal protective equipment : Avoid all unnecessary exposure. Hand protection : Wear protective gloves. Eye protection : Chemical goggles or safety glasses. Skin and body protection : Wear suitable protective clothing. Respiratory protection : Wear appropriate mask. Other information : Do not eat, drink or smoke during use. SECTION 9: Physical and chemical properties 9.1. Information on basic physical and chemical properties Physical state : Liquid Appearance : Yellow liquid. Colour : Yellow. Odour : chlorine-like. Odour threshold : 0.3 ppm pH : 11.3 Relative evaporation rate (butylacetate=1) : No data available Melting point : No data available Freezing point : No data available Boiling point : No data available Flash point : No data available Self ignition temperature : No data available Decomposition temperature : No data available Flammability (solid, gas) : No data available Vapour pressure : 12 mm Hg Relative vapour density at 20 °C : No data available Relative density : No data available Solubility : Soluble in water. Log Pow : No data available Log Kow : No data available Viscosity, kinematic : No data available Viscosity, dynamic : No data available Sodium Hypochlorite, 5% w/v Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 11/19/2013 EN (English)

Sodium Hypochlorite SDS 4/7 Explosive properties : No data available Oxidising properties : No data available Explosive limits : No data available 9.2. Other information VOC content : 0 % SECTION 10: Stability and reactivity 10.1. Reactivity No additional information available 10.2. Chemical stability Stable under normal conditions. 10.3. Possibility of hazardous reactions Reacts violently with acids. May react violently with reducing agents. Contact with acids liberates toxic gas. 10.4. Conditions to avoid Incompatible materials. Direct sunlight. Extremely high or low temperatures. 10.5. Incompatible materials Strong reducing agents. Water. zinc. metals. aluminium. Ammonia. Strong acids. 10.6. Hazardous decomposition products Hydrogen chloride. Chlorine. Phosgene. SECTION 11: Toxicological information 11.1. Information on toxicological effects Acute toxicity : Not classified Water (7732-18-5) LD50 oral rat ≥ 90000 mg/kg Skin corrosion/irritation : Causes skin irritation. pH: 11.3 Serious eye damage/irritation : Causes serious eye damage. pH: 11.3 Respiratory or skin sensitisation : Not classified Germ cell mutagenicity : Not classified Carcinogenicity : Not classified Sodium Hypochlorite (7681-52-9) IARC group 3 – Not classifiable Reproductive toxicity : Not classified Specific target organ toxicity (single exposure) : Not classified Specific target organ toxicity (repeated exposure) : Not classified Aspiration hazard : Not classified Potential Adverse human health effects and symptoms : Based on available data, the classification criteria are not met. Symptoms/injuries after skin contact : Causes skin irritation. Symptoms/injuries after eye contact : Causes serious eye damage. SECTION 12: Ecological information 12.1. Toxicity Ecology – water : Toxic to aquatic life. Sodium Hypochlorite, 5% w/v (7681-52-9) LC50 fishes 1 4.7 mg/l Sodium Hypochlorite, 5% w/v Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 11/19/2013 EN (English)

Sodium Hypochlorite SDS 5/7 Sodium Hypochlorite (7681-52-9) LC50 fishes 1 0.026 mg/l (96 h; Oncorhynchus kisutch; Chlorine) EC50 Daphnia 1 2.1 mg/l (96 h; Daphnia magna) EC50 other aquatic organisms 1 0.2 mg/l (24 h; Skeletonema costatum; Biomass) LC50 fish 2 0.19 mg/l (96 h; Pimephales promelas) Threshold limit algae 1 0.84 mg/l (24 h; Chlorophyta; Biomass) 12.2. Persistence and degradability Sodium Hypochlorite, 5% w/v (7681-52-9) Persistence and degradability Not established. Sodium Hypochlorite (7681-52-9) Persistence and degradability Biodegradability: not applicable. Biochemical oxygen demand (BOD) Not applicable Chemical oxygen demand (COD) Not applicable ThOD Not applicable BOD (% of ThOD) Not applicable Water (7732-18-5) Persistence and degradability Not established. 12.3. Bioaccumulative potential Sodium Hypochlorite, 5% w/v (7681-52-9) Bioaccumulative potential Not established. Sodium Hypochlorite (7681-52-9) Bioaccumulative potential Not bioaccumulative. Water (7732-18-5) Bioaccumulative potential Not established. 12.4. Mobility in soil No additional information available 12.5. Other adverse effects Other information : Avoid release to the environment. SECTION 13: Disposal considerations 13.1. Waste treatment methods Waste disposal recommendations : Dispose in a safe manner in accordance with local/national regulations. Dispose of contents/container to comply with local, state and federal regulations. Ecology – waste materials : Avoid release to the environment. SECTION 14: Transport information In accordance with DOT No dangerous good in sense of transport regulations Additional information Other information : No supplementary information available. ADR Transport document description : Transport by sea No additional information available Air transport No additional information available Sodium Hypochlorite, 5% w/v Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations 11/19/2013 EN (English)

Sodium Hypochlorite SDS 6/7 SECTION 15: Regulatory information 15.1. US Federal regulations Sodium Hypochlorite, 5% w/v (7681-52-9) Listed on the United States TSCA (Toxic Substances Control Act) inventory RQ (Reportable quantity, section 304 of EPA’s List of Lists) : 100 lb Sodium Hypochlorite (7681-52-9) Listed on the United States TSCA (Toxic Substances Control Act) inventory RQ (Reportable quantity, section 304 of EPA’s List of Lists) : 100 lb Water (7732-18-5) Listed on the United States TSCA (Toxic Substances Control Act) inventory 15.2. International regulations CANADA Sodium Hypochlorite, 5% w/v (7681-52-9) WHMIS Classification Class E – Corrosive Material Water (7732-18-5) WHMIS Classification Uncontrolled product according to WHMIS classification criteria EU-Regulations No additional information available Classification according to Regulation (EC) No. 1272/2008 [CLP] Classification according to Directive 67/548/EEC or 1999/45/EC C; R34 R31 N; R50 Full text of R-phrases: see section 16 15.2.2. National regulations No additional information available 15.3. US State regulations No additional information available SECTION 16: Other information Other information : None. Full text of H-phrases: see section 16: —— Aquatic Acute 1 Hazardous to the aquatic environment — AcuteHazard, Category 1 —— Aquatic Acute 2 Hazardous to the aquatic environment — AcuteHazard, Category 2 —— Eye Dam. 1 Serious eye damage/eye irritation, Category 1 —— Ox. Sol. 2 Oxidising Solids, Category 2 —— Skin Corr. 1B Skin corrosion/irritation, Category 1B —— Skin Irrit. 2 Skin corrosion/irritation, Category 2 —— STOT SE 3 Specific target organ toxicity — Single exposure, Category 3, Respiratory tract irritation —— Unst. Expl Explosives, Unstable explosives —— H200 Unstable explosives —— H272 May intensify fire; oxidiser Sodium Hypochlorite, 5% w/v Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations —— H314 Causes severe skin burns and eye damage —— H315 Causes skin irritation —— H318 Causes serious eye damage —— H335 May cause respiratory irritation —— H400 Very toxic to aquatic life —— H401 Toxic to aquatic life NFPA health hazard : 3 – Short exposure could cause serious temporary or residual injury even though prompt medical attention was given. NFPA fire hazard : 0 – Materials that will not burn. NFPA reactivity : 1 – Normally stable, but can become unstable at elevated temperatures and pressures or may react with water with some release of energy, but not violently. HMIS III Rating Health : 3 Serious Hazard – Major injury likely unless prompt action is taken and medical treatment is given Flammability : 0 Minimal Hazard Physical : 1 Slight Hazard Personal Protection : H SDS US (GHS HazCom 2012) Information in this SDS is from available published sources and is believed to be accurate. No warranty, express or implied, is made and LabChem Inc assumes no liability resulting from the use of this SDS. The user must determine suitability of this information for his application. 11/19/2013 EN (English) 7/7

Sodium Thiosulfate, Pentahydrate Safety Data Sheetaccording to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations04/25/2018 EN (English US) 2/6 4.2. Most important symptoms and effects (acute and delayed) Symptoms/effects : Not expected to present a significant hazard under anticipated conditions of normal use. 4.3. Immediate medical attention and special treatment, if necessary No additional information available SECTION 5: Fire-fighting measures 5.1. Suitable (and unsuitable) extinguishing media Suitable extinguishing media : Foam. Dry powder. Carbon dioxide. Water spray. Sand. Unsuitable extinguishing media : Do not use a heavy water stream. 5.2. Specific hazards arising from the chemical Reactivity : Product is not explosive. 5.3. Special protective equipment and precautions for fire-fighters Firefighting instructions : Use water spray or fog for cooling exposed containers. Exercise caution when fighting any chemical fire. Prevent fire-fighting water from entering environment. Protection during firefighting : Do not enter fire area without proper protective equipment, including respiratory protection. SECTION 6: Accidental release measures 6.1. Personal precautions, protective equipment and emergency procedures 6.1.1. For non-emergency personnel Protective equipment : Safety glasses. Emergency procedures : Evacuate unnecessary personnel. 6.1.2. For emergency responders Protective equipment : Equip cleanup crew with proper protection. Emergency procedures : Ventilate area. 6.2. Environmental precautions Prevent entry to sewers and public waters. Notify authorities if liquid enters sewers or public waters. 6.3. Methods and material for containment and cleaning up Methods for cleaning up : On land, sweep or shovel into suitable containers. Minimize generation of dust. Store away from other materials. 6.4. Reference to other sections See Heading 8. Exposure controls and personal protection. SECTION 7: Handling and storage 7.1. Precautions for safe handling Precautions for safe handling : Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work. Provide good ventilation in process area to prevent formation of vapor. Hygiene measures : Wash contaminated clothing before reuse. 7.2. Conditions for safe storage, including any incompatibilities Storage conditions : Keep container closed when not in use. Incompatible products : Strong oxidizers. Incompatible materials : Direct sunlight. Air and moisture sensitive. Hygroscopic. SECTION 8: Exposure controls/personal protection 8.1. Control parameters No additional information available 8.2. Appropriate engineering controls Appropriate engineering controls : Emergency eye wash fountains should be available in the immediate vicinity of any potential exposure.

Sodium Thiosulfate, Pentahydrate Safety Data Sheetaccording to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations04/25/2018 EN (English US) 3/6 8.3. Individual protection measures/Personal protective equipment Personal protective equipment:Safety glasses. Hand protection: Wear protective gloves.Eye protection: Chemical goggles or safety glassesRespiratory protection: Respiratory protection not required in normal conditionsOther information:Do not eat, drink or smoke during use. SECTION 9: Physical and chemical properties 9.1. Information on basic physical and chemical properties Physical state : Solid Appearance : Crystalline solid. Color : Colourless or white Odor : Odorless Odor threshold : No data available pH : No data available pH solution : 6 – 8.4 5% solution Melting point : 45 °C Freezing point : No data available Boiling point : 100 °C Flash point : No data available Relative evaporation rate (butyl acetate=1) : No data available Flammability (solid, gas) : Non flammable. Vapor pressure : No data available Relative vapor density at 20 °C : No data availableRelative density : No data available Specific gravity / density : 1.73 g/cm³ Molecular mass : 248.18 g/mol Solubility : Soluble in water. Soluble in ammonia. Insoluble in organic solvents. Water: 79.4 g/100ml Log Pow : -4.35 Auto-ignition temperature : No data available Decomposition temperature : No data available Viscosity, kinematic : No data available Viscosity, dynamic : No data available Explosion limits : No data available Explosive properties : Not applicable. Oxidizing properties : None. 9.2. Other information No additional information available

Safety Data Sheet SODIUM THIOSULFATE SOLUTION

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1 Section 1 – Product and Company Identification Product Name: Sodium Thiosulfate Solution Chemical Formula: Na2S2O3 CAS Number: 00772-98-7 General Use: Waste water dechlorination agent and lab reagent Supplier: 701 N Post Oak Rd., Ste. 540 Houston, TX 77024 Section 2 – Hazards Identification Emergency Overview Target Organs: None GHS Classification: Not a dangerous substance or mixture GHS Label Elements: None Hazard Statements: Precautionary None None Statements: HMIS Classification: Health Hazard 1 Flammability 0 Reactivity 0 Potential Health Effects: Inhalation: Eye: Skin: Ingestion: Irritant Irritant Irritant Harmful if swallowed Medical Condition aggravated by long term exposure – Capable of provoking bronchospasm in sulfite sensitive individuals with asthma. Section 3 – Composition / Information on Ingredients Composition CAS Number % Wt Sodium Thiosulfate 10102-17-7 30 – 60 Water 7732-18-5 40 -70 Sodium Sulfite 7757-83-7 1.5 Sodium Sulfate 7757-82-6 2.0 Section 4 – First Aid Measures Telephone: 713-957-2200/800-535-2847 Fax: 713-957-0345 Email: [email protected] Emergency Contact: CHEMTREC/800-424-9300/ACCT #: CCN721839 2

Safety Data Sheet SODIUM THIOSULFATE SOLUTION Exposure Route Symptom Treatment Inhalation: Sore throat, shortness of breath coughing, and congestion. Remove from exposure to fresh air. Seek medical attention in severe cases or if recovery is not rapid. Eye Contact: Irritation to eyes and mucous Irrigate with water until no evidence of membranes. chemical remains. Obtain medical attention. Skin Contact: Irritation, itching, dermatitis Wash with soap and drench with water. Remove contaminated clothing and wash before reuse. Ingestion: Irritation to mucous membranes. Give large quantities of water or milk immediately. Obtain medical attention. After first aid, get appropriate medical attention. Note to Physician: Exposure may aggravate acute or chronic asthma, emphysema and bronchitis. Section 5 – Fire-Fighting Measures Flash Point: Not combustible. Flash Point Method: Not Applicable. Burning Rate: Not Applicable. Auto ignition Temperature: Not Applicable. LEL: Not Applicable. UEL: Not Applicable. Flammability Classification: Not Flammable. Extinguishing Media: Use extinguishing agent appropriate for surrounding fire conditions. Unusual Fire or Explosion Hazards: None indicated. Hazardous Combustion Products: May release hazardous gas. Fire-Fighting Instructions: Do not release runoff from fire control methods to sewers or waterways. Fire-Fighting Equipment: Because fire may produce toxic thermal decomposition products, wear a self-contained breathing apparatus (SCBA) with a full face piece operated in pressure-demand or positive-pressure mode. Section 6 – Accidental Release Measures Spill / Leak Procedures: Wear appropriate PPE – See Section 8. Small Spills / Leaks: Leaks may be located by spraying the area with ammonium hydroxide solution which forms a white fume in the presence of sulfur dioxide. Large Spills / Leaks: Large spills should be handled according to a predetermined plan. Containment: For large spills, dike far ahead of contaminated runoff for later disposal. Section 7 – Handling and Storage Handling Precautions: Avoid contact with product. Do not breathe vapor. Storage Requirements: Avoid heat or moisture. Store in areas, away from heat and moisture and protected from physical damage. Segregate from acids and oxidizers.

3 Safety Data Sheet SODIUM THIOSULFATE SOLUTION Section 8 – Exposure Controls / Personal Protection Composition CAS Number TWA STEL IDLH Sodium Sulfite 007757-83-7 * * * Sodium Sulfate 007757-82-6 * * * * None established. Control as nuisance dust. Ventilation: Provide general or local exhaust ventilation systems to maintain airborne concentrations below OSHA limits (Sec. 2). Local exhaust ventilation is preferred because it prevents contaminant dispersion into the work area by controlling it at the source. Respiratory Protection: Follow OSHA respirator regulations (29 CFR 1910.134) and, if necessary, wear a MSHA/NIOSH-approved respirator. Select respirator based on its suitability to provide adequate worker protection for given working conditions, level of airborne contamination, and presence of sufficient oxygen. For emergency or non-routine operations (cleaning spills, reactor vessels, or storage tanks), wear a SCBA. Warning! Air-purifying respirators do not protect workers in oxygen-deficient atmospheres. Protective Clothing / Wear protective gloves, boots, and clothing when necessary to prevent Equipment: excessive skin contact. Wear protective eyeglasses or goggles, per OSHA eye- and face-protection regulations (29 CFR 1910.133). Safety Stations: Make emergency eyewash stations, showers, and washing facilities available in the work area. Contaminated Equipment: Remove this material from personal protective equipment as needed. Comments: Do not eat, drink, or smoke in work areas. Practice good personal hygiene after using this material, especially before food or beverage consumption. Section 9 – Physical and Chemical Properties Physical State: Other Solubility: Liquid NA Water Solubility: Odor Threshold: Completely miscible None Boiling Point: Similar to water VaporPressure: Similar to water Freezing Point: Similar to water Vapor Density: Similar to water Melting Point: Similar to water Evaporation Rate: Normal Density: NA pH: 6.5––– 8.0 Volatility: 30 – 70 % Section 10 – Stability & Reactivity Stability: Stable under normal conditions. Polymerization: Hazardous polymerization will not occur. Chemical Incompatibilities: Sodium sulfite may, in acidic solutions, release toxic and hazardous fumes of sulfur oxides, including sulfur dioxide. Acute poisoning from sulfur dioxide is rare because the gas is easily detected. It is so irritating that

4 Safety Data Sheet SODIUM THIOSULFATE SOLUTION contact cannot be tolerated. Symptoms include coughing, hoarseness, sneezing, tearing, and breathing difficulty. However, workers who cannot escape high accidental exposure may suffer severe pulmonary damage which can be fatal. Contact with powdered potassium, sodium metals, alkali, and oxidizing agents produce violent reactions. Reacts with water and steam to form corrosive sulfurous acid. Reacts with chlorates to form unstable chlorine dioxide. Conditions to Avoid: Avoid excessive heat, or open flame. Hazardous Decomposition Products: May release hazardous sulfur dioxide gas. Section 11 – Toxicological Information Eye Effects (rabbit): Not available. Acute Inhalation Effects (rabbit): Not Available Skin Effects (rabbit): Not available Acute Oral Effects (rabbit):LD50 = Not Available Carcinogenicity: IARC, NTP, and OSHA do not list Sodium Sulfite as a carcinogen. Chronic Effects: Prolonged or repeated exposure may cause dermatitis, and sensitization reactions. Exposure to asthmatic, atopic and sulfite sensitive individuals may result in severe bronchoconstriction and reduced levels in forced expiratory volume. Acidic decomposition of sodium sulfite may release toxic and hazardous fumes of sulfur oxides, including sulfur dioxide, which may cause permanent pulmonary impairments from acute and chronic exposure. Section 12 – Ecological Information Ecotoxicity: Sodium Sulfite is non hazardous in solution and is commonly used as a waste water dechlorination agent. High concentrations will contribute to elevated chemical oxygen demand in aquatic environments. Environmental Transport: Soluble in water. Environmental Degradation: Rapid biological decomposition. Soil Absorption/Mobility: Slight. Section 13 – Disposal Considerations Disposal: Waste determinations typically consider Sodium Sulfite contaminated materials to be non-hazardous. Disposal Regulatory Requirements: Follow applicable Federal, state and local regulations. Container Cleaning and Disposal: Follow applicable Federal, state and local regulations. .Section 14 – Transport Information DOT Transportation Data (49 CFR 172.101): Shipping Name: Non-Regulated Material Shipping Symbols: NA Hazard Class: NA Subsidiary Hazard: NA ID No.: NA Packing Group: NA Label: NA Special Provisions: None indicated

5 Safety Data Sheet SODIUM THIOSULFATE SOLUTION Section 15 – Regulatory Information EPA Regulations: RCRA Hazardous Waste Classification (40 CFR 261): Not listed. RCRA Hazardous Waste Number (40 CFR 261): Not listed. CERCLA Hazardous Substance (40 CFR 302.4): Not listed. CERCLA Reportable Quantity (RQ): NA SARA Title III: Not listed. FIFRA: Not regulated. TSCA: All ingredients listed OSHA Regulations: Air Contaminant (29 CFR 1910.1000): Not listed. OSHA Specifically Regulated Substance: Not listed. Other Regulations: WHMIS Classification (Canada): Not listed Section 16 – Other Information Previous MSDS issue date: April, 2012 Current SDS issue date: May, 2015 Reason for current revision: To comply with GHS requirements. The information herein is believed to be reliable. However, no warranty, expressed or implied, is made as to its accuracy or completeness and none is made as to the fitness of this material for any purpose. The supplier shall not be liable for damages to person or property resulting from its use. Nothing herein shall be construed as a recommendation for use in violation of any patent.