Sodium carbonate SDS/MSDS (Safety Data Sheet)

3.1 Substances
Product name: Sodium carbonate
CAS Number: 497-19-8
PubChem CID: 10340
Molecular formula: CNa2O3
Molecular weight: 105.988 g/mol
IUPAC name: disodium;carbonate

3.2 Mixtures
Not applicable (pure substance).

4.1 Description of first aid measures
Inhalation: Fresh air, rest.
Skin contact: Rinse skin with plenty of water or shower.
Eye contact: First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion: Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention .

4.2 Most important symptoms and effects, both acute and delayed
See Section 11 (Toxicological Information).

4.3 Indication of any immediate medical attention and special treatment needed
Treat symptomatically. Contact a poison control center or physician for severe exposure.

5.1 Extinguishing media
Suitable: Water spray, dry chemical, carbon dioxide (CO2), alcohol-resistant foam.
Unsuitable: None known.

5.2 Specific hazards arising from the substance or mixture
In case of fire in the surroundings, use appropriate extinguishing media.
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Advice for firefighters: Wear self-contained breathing apparatus for firefighting if necessary.

5.3 Advice for firefighters
Wear self-contained breathing apparatus (SCBA) and full protective clothing.
Fight fire from upwind. Cool containers with water spray until fire is extinguished.

6.1 Personal precautions, protective equipment and emergency procedures
Wear appropriate personal protective equipment (see Section 8).
Avoid breathing dust/vapor. Ensure adequate ventilation.
Evacuate personnel to safe areas. Keep people away from and upwind of spill.

6.2 Environmental precautions
Prevent product from entering drains, waterways, or soil.
Contain spill with inert absorbent material.

6.3 Methods and materials for containment and cleaning up
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance, safety goggles and protective gloves. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.
ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Avoid breathing dust. Environmental precautions: Do not let product enter drains. Methods and materials for containment and cleaning up: Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal.
SRP: Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in air, soil or water; effects on animal, aquatic and plant life; and conformance with environmental and public health regulations. If it is possible or reasonable use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination.
Product Offer: Surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional waste disposal service to dispose of this material. Contaminated packaging: Dispose of as unused product.
ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Avoid breathing dust. Environmental precautions: Do not let product enter drains.
Precautions for safe handling: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Further processing of solid materials may result in the formation of combustible dusts. The potential for combustible dust formation should be taken into consideration before additional processing occurs. Provide appropriate exhaust ventilation at places where dust is formed.
Appropriate engineering controls: Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.
Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.
For more Preventive Measures (Complete) data for Sodium carbonate (7 total), please visit the HSDB record page.

7.1 Precautions for safe handling
Dry. Well closed. Separated from incompatible materials. See Chemical Dangers.
Keep container tightly closed in a dry and well-ventilated place. Hygroscopic. Keep in a dry place. Storage class (TRGS 510): Non Combustible Solids.
Calcined soda ash is hygroscopic, gradually taking up moisture and carbon dioxide during transportation and storage. This converts the surface of sodium carbonate to the bicarbonate and leads to a weight increase of up to 17%. Soda ash is therefore best stored in closed, dry areas.
Keep well closed.
It migrates to food from packaging materials.

7.2 Conditions for safe storage, including any incompatibilities
Dry. Well closed. Separated from incompatible materials. See Chemical Dangers.
Keep container tightly closed in a dry and well-ventilated place. Hygroscopic. Keep in a dry place. Storage class (TRGS 510): Non Combustible Solids.
Calcined soda ash is hygroscopic, gradually taking up moisture and carbon dioxide during transportation and storage. This converts the surface of sodium carbonate to the bicarbonate and leads to a weight increase of up to 17%. Soda ash is therefore best stored in closed, dry areas.
Keep well closed.
It migrates to food from packaging materials.
Store away from incompatible materials (see Section 10).
[Note: Specific storage temperature not available in public databases. Refer to supplier Certificate of Analysis (COA) for exact storage conditions.]
Store in original container. Keep upright to prevent leakage.

9.1 Information on basic physical and chemical properties
a) Appearance: Dry Powder; Other Solid; Large Crystals; CBI; Dry Powder; Large Crystals; Liquid; Wet Solid; Other Solid; Liquid; Dry Powder; Liquid; Liquid; Other Solid
b) Odor: Odorless
c) Odor threshold: No data available
d) pH: Aqueous solutions are strongly alkaline. At 25 °C, the pH of 1, 5 and 10 wt% sodium carbonate solutions are 11.37, 11.58 and 11.70, respectively.
e) Melting point/freezing point: 856 °C
f) Initial boiling point and boiling range: Decomposes on heating by CO2 loss
g) Flash point: No data available
h) Evaporation rate: No data available
i) Flammability (solid, gas): No data available
j) Upper/lower flammability or explosive limits: No data available
k) Vapor pressure: No data available
l) Vapor density: No data available
m) Relative density: 2.54 g/cu cm
n) Water solubility: Freely soluble in water. Insoluble in ethanol
o) Partition coefficient: n-octanol/water: Log P: No data available
p) Auto-ignition temperature: No data available
q) Decomposition temperature: No data available
r) Viscosity: No data available
s) Explosive properties: No data available
t) Oxidizing properties: No data available

9.2 Other information
Topological Polar Surface Area (TPSA): 63.2 Ų
Complexity: 18

11.1 Information on toxicological effects
Acute toxicity:
No acute toxicity data available.
Skin corrosion/irritation:
No data available.
Serious eye damage/eye irritation:
Causes serious eye damage (H318).
Respiratory or skin sensitization:
No data available.
Germ cell mutagenicity:
No data available.
Carcinogenicity:
No data available.
Reproductive toxicity:
No data available.
Specific target organ toxicity (single exposure):
H370
Specific target organ toxicity (repeated exposure):
No data available.
Aspiration hazard:
May be fatal if swallowed and enters airways (H304).

11.2 Additional information
Exposure routes:
The substance can be absorbed into the body by inhalation of dust.
Signs and symptoms of exposure:
Cough.
Redness.
Redness. Pain.
Sore throat. Nausea. Abdominal pain.
Data source: Hazardous Substances Data Bank (HSDB) via PubChem.

12.1 Toxicity
LC50; Species: Lepomis macrochirus (Bluegill) length 5.3-7.2 cm, weight 3.5-3.9 g; Conditions: freshwater, static, 18-20 °C, hardness 10 mg/L CaCO3, dissolved oxygen 5-9 mg/L; Concentration: 320000 ug/L for 96 hr /technical/
LC50; Species: Pimephales promelas (Fathead Minnow) age 1-7 days; Conditions: freshwater, static, 25 °C, pH 7.5-9.0, dissolved oxygen >40%; Concentration: 4850000 ug/L for 24 hr (95% confidence interval: 3540000-6160000 ug/L) /technical/
LC50; Species: Pimephales promelas (Fathead Minnow) age 1-7 days; Conditions: freshwater, static, 25 °C, pH 7.5-9.0, dissolved oxygen >40%; Concentration: 2500000 ug/L for 48 hr (95% confidence interval: 950000-4060000 ug/L) /technical/
LC50; Species: Pimephales promelas (Fathead Minnow) age 1-7 days; Conditions: freshwater, static, 25 °C, pH 7.5-9.0, dissolved oxygen >40%; Concentration: 850000 ug/L for 96 hr (95% confidence interval: 310000-1220000 ug/L) /technical/
For more Ecotoxicity Values (Complete) data for Sodium carbonate (8 total), please visit the HSDB record page.
/AQUATIC SPECIES/ The natural habitat of sponge, Eunapius carteri faces an ecotoxicological threat of contamination by washing soda, a common household cleaning agent of India. Washing soda is chemically known as sodium carbonate and is reported to be toxic to aquatic organisms. Domestic effluent, drain water and various human activities in ponds and lakes have been identified as the major routes of washing soda contamination of water. Phagocytosis

12.2 Persistence and degradability
No data available.

12.3 Bioaccumulative potential
No data available.

12.4 Mobility in soil
No data available.

12.5 Results of PBT and vPvB assessment
PBT/vPvB assessment not available.

12.6 Other adverse effects
No other adverse ecological effects identified.

13.1 Waste treatment methods
Waste Treatment Methods: Waste material must be disposed of in accordance with national and local regulations. Leave chemicals in original containers and do not mix with other waste. Handle uncleaned containers in the same manner as the product itself.

14.1 UN number
Not regulated as dangerous goods (research quantities typically exempt).

14.2 UN proper shipping name
Not subject to transport regulations (small quantities for research use).

14.3 Transport hazard class(es)
Not classified as dangerous goods for transport (research quantities).

14.4 Packing group
Not applicable (not regulated as dangerous goods in typical research quantities).

14.5 Environmental hazards
Marine pollutant: No (not classified as environmentally hazardous per GHS).

14.6 Special precautions for user
Transport in original packaging. Ensure containers are tightly sealed.
For bulk or commercial quantities, consult applicable transport regulations (DOT, IATA, IMDG).

14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable.

15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
US EPA / TSCA: Subject to EPA TSCA regulations
EU ECHA / REACH: Registered (REACH Active)

SARA 302 Components:
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.
SARA 313 Components:
This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313.
SARA 311/312 Hazards:
Acute (short-term) health hazard

Massachusetts Right To Know Components:
This material contains components subject to the Massachusetts Right to Know Act. See Section 2 for hazard classification.
Pennsylvania Right To Know Components:
This material contains components subject to the Pennsylvania Right to Know Act. See Section 2 for hazard classification.
New Jersey Right To Know Components:
This material contains components subject to the New Jersey Right to Know Act. See Section 2 for hazard classification.

California Prop. 65 Components:
This product does not contain any chemicals known to the State of California to cause cancer, birth defects, or any other reproductive harm.

Other regulatory listings:
- The Australian Inventory of Industrial Chemicals: Chemical: Carbonic acid, disodium salt
- EFSA Legal Basis: Regulation (EC) No 1831/2003 (amended)
- Status Regulation (EC): 2004/129/EC
- FIFRA Requirements: An exemption from the requirement of a tolerance is established for residues of sodium carbonate.
The Agency has completed its assessment of the dietary, residential, occupational and ecological risks associated with the use of pesticide products containing the active ingredient sodium carbonate. Ba
- FDA Requirements: Substance added directly to human food affirmed as generally recognized as safe (GRAS).
Sodium carbonate used as a general purpose food additive in animal drugs, feeds, and related products is generally recognized as safe when used in accordance with good manufacturing or feeding practice.
Drug prod

15.2 Chemical safety assessment
A chemical safety assessment has not been carried out for this substance.
For research-use-only compounds, no CSA is required under REACH Annex I.

Revision Date: 2026/09/09
Further Information: The information provided is believed to be correct but is not exhaustive and should be used only as a guideline based on current knowledge. It does not represent a guarantee of the properties of the product. Selleck Chemicals Corporation and its Affiliates shall not be held liable for any damage resulting from handling or contact with the product.