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.