Material Safety Data Sheet: Sodium Acetate Trihydrate

1. Identification

Product Name: Sodium Acetate Trihydrate
Chemical Formula: C2H3NaO2·3H2O
CAS Number: 6131-90-4
Recommended Use: Used in laboratory chemicals, buffer solutions, food additive, dye agents, concrete sealers
Supplier Identification: Manufacturer’s contact details, including emergency phone number, address, website, and responsible department for health, safety, and environmental questions
Synonyms: Acetic acid, sodium salt, trihydrate
UN Number: Not classified as dangerous goods for transport

2. Hazard Identification

Classification: Not classified as hazardous according to OSHA HCS (US), GHS, or EU CLP
Label Elements: No pictogram, signal word, hazard statement, or precautionary statement required
Potential Health Effects: May cause mild irritation to eyes, skin, and respiratory system under excessive or prolonged exposure
Environmental Hazards: Low environmental impact, not considered hazardous to aquatic systems in small quantities
Physical Hazards: Not flammable, not reactive with common substances

3. Composition / Information on Ingredients

Chemical Name: Sodium Acetate Trihydrate
Common Name: Sodium Acetate
CAS Number: 6131-90-4
EC Number: 204-823-8
Concentration: 99-100% by weight

4. First Aid Measures

Eye Contact: Rinse with plenty of water, hold eyelids apart, seek medical attention if irritation persists
Skin Contact: Remove contaminated clothing, wash affected area with soap and water, consult a physician if irritation continues
Inhalation: Move to fresh air, rest in comfortable position, seek medical attention if symptoms develop
Ingestion: Rinse mouth, drink water, do not induce vomiting, get medical advice if feeling unwell
Most Important Symptoms: Mild irritation to eyes, skin or throat, no known delayed or chronic effects

5. Fire-Fighting Measures

Suitable Extinguishing Media: Use water, dry chemical, foam, or carbon dioxide
Unsuitable Media: No known restrictions
Hazards from Combustion: Emits sodium oxides, carbon oxides under high temperature
Protective Equipment: Firefighters wear self-contained breathing apparatus and protective gear
Special Precautions: Fight fire from a safe distance, prevent runoff into drains

6. Accidental Release Measures

Personal Precautions: Wear suitable gloves, safety goggles, dust mask to avoid dust contact
Environmental Precautions: Prevent large releases from entering drains or watercourses
Cleanup Methods: Sweep up dry material, avoid creating dust, collect into labeled containers for reuse or disposal, flush spill area with water
Additional Guidance: Follow relevant regulations for cleaning chemical spills in laboratories or workplaces

7. Handling and Storage

Safe Handling: Use with adequate ventilation to control dust, wear appropriate personal protective equipment, avoid contact with eyes, skin, clothing
Technical Measures: Ensure containers tightly closed when not in use, avoid formation of dust, use tools and utensils designated for chemicals
Storage Conditions: Store in cool, dry, well-ventilated place, keep away from incompatibles like strong acids, store in original packaging or compatible containers
Storage Incompatibilities: Strong oxidizing agents, strong acids

8. Exposure Controls and Personal Protection

Exposure Limits: No occupational exposure limits established in most jurisdictions
Engineering Controls: Use local exhaust or general ventilation to minimize exposure to airborne dust
Personal Protection: Safety goggles, chemical-resistant gloves, lab coat, dust mask (P2 or N95 rating) if dust generation is possible
Hygiene Measures: Wash hands before eating or touching face, remove contaminated clothing before leaving work area
Environmental Controls: Avoid discharge into environment in large quantities

9. Physical and Chemical Properties

Appearance: White crystalline solid
Odor: Slight acetic acid odor
Odor Threshold: Not available
pH (1% Solution): 7.9–9.2
Melting Point: 58°C
Boiling Point: Decomposes before boiling
Flash Point: Not flammable
Evaporation Rate: Not applicable
Flammability: Non-flammable
Explosion Limits: Not applicable
Vapor Pressure: Not volatile
Vapor Density: Not applicable
Relative Density (Water=1): 1.45
Solubility in Water: Freely soluble (76 g/100 mL at 0°C)
Partition Coefficient (n-octanol/water): Not established
Auto-ignition Temperature: Not self-igniting
Decomposition Temperature: > 120°C (dehydrates and decomposes)
Viscosity: Not relevant

10. Stability and Reactivity

Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Not reactive under normal use and storage
Conditions to Avoid: Contact with strong acids or oxidizers, excessive moisture, high temperature
Incompatible Materials: Strong oxidizing agents, strong acids
Hazardous Decomposition Products: Sodium oxides, carbon dioxide, and acetic acid vapors on decomposition
Polymerization: Will not occur

11. Toxicological Information

Routes of Exposure: Skin contact, eye contact, inhalation, ingestion
Acute Toxicity: Low toxicity, oral LD50 (rat): >3500 mg/kg
Skin Corrosion/Irritation: May cause mild irritation on prolonged contact
Serious Eye Damage/Irritation: May cause transient irritation
Respiratory Sensitization: Not known to cause sensitization
Skin Sensitization: Not a skin sensitizer
Chronic Toxicity: No reported long-term health effects
Mutagenicity, Carcinogenicity, Reproductive Toxicity: Not classified as genotoxic, carcinogenic, or toxic for reproduction under applicable regulations

12. Ecological Information

Ecotoxicity: Not expected to harm aquatic organisms at typical concentrations, LC50 (fish, 48 h): >1000 mg/L
Persistence and Degradability: Readily biodegradable in water; breaks down into natural components
Bioaccumulation Potential: Low, does not accumulate in organisms
Mobility in Soil: High solubility in water leads to rapid migration through soil
Other Adverse Effects: No evidence of significant ecological impacts under normal use or accidental release scenarios

13. Disposal Considerations

Waste Treatment Methods: Dispose through municipal disposal programs or licensed waste contractor
Product: Reuse if possible, otherwise treat as non-hazardous chemical waste
Contaminated Packaging: Triple rinse containers before recycling or disposal, follow local and federal guidelines
Environmental Precautions: Avoid release of large quantities into surface water or drains
Regulatory Requirements: Dispose in compliance with local, state, and national waste regulations, do not burn or landfill unless permitted

14. Transport Information

UN Number: Not regulated as a hazardous material
UN Proper Shipping Name: Not applicable
Transport Hazard Class: Not applicable
Packing Group: Not classified
Environmental Hazards: Not a marine pollutant or environmental hazard
Special Precautions for Users: Secure packaging to prevent physical damage and prevent dust release during transit
Transport in Bulk: Safe to transport in bulk containers, avoid exposure to moisture
International Transport: Not subject to ADR, RID, IMDG, IATA requirements

15. Regulatory Information

OSHA: Not listed as a hazardous chemical
TSCA: Listed on the US Toxic Substances Control Act Inventory
DSL/NDSL (Canada): Listed
EU REACH: Registered, not classified as hazardous
SARA Title III: Not subject to Section 302, 304, 313 reporting
California Proposition 65: Not listed as causing cancer or reproductive toxicity
WHMIS (Canada): Not controlled product
Other Country-Specific Regulations: Compliant with Japanese, Australian, and other relevant chemical inventories
Labelling Requirements: General chemical labelling; not subject to special hazard labels