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Sodium Acetate Material Safety Data Sheet (MSDS)

Identification

Product Name: Sodium Acetate
Chemical Formula: C2H3NaO2
Synonyms: Acetic acid sodium salt, Sodium ethanoate
CAS Number: 127-09-3
Use: Employed in heating pads, buffer solutions, food additive, laboratory reagent
Supplier Details: Manufacturer and distributor contact numbers, emergency phone, address
Recommended Restrictions: Laboratory and industrial use only; not for household applications

Hazard Identification

Hazard Class: Sodium acetate does not meet classification criteria for hazardous chemicals as per OSHA HCS
Signal Word: Not required
Hazard Statements: May cause minor irritation to eyes, skin, and respiratory tract if exposed to large quantities or over long periods
Pictograms: Not applicable
Precautionary Statements: Avoid unnecessary exposure, practice good hygiene, use proper ventilation, and protect eyes and skin from dust

Composition / Information on Ingredients

Chemical Name: Sodium Acetate
Common Name: Sodium Acetate Anhydrous / Sodium Acetate Trihydrate
CAS Number: 127-09-3 (anhydrous), 6131-90-4 (trihydrate)
Concentration: Typically supplied as pure chemical (greater than 99% purity)
Impurities: Trace water, minimal other organic or inorganic salts
Stabilizers/Additives: None usually present

First Aid Measures

Inhalation: Move to fresh air, seek medical attention if discomfort continues or symptoms worsen
Skin Contact: Remove contaminated clothing, rinse affected skin thoroughly with water, see a doctor if irritation persists
Eye Contact: Rinse eyes gently under running water for several minutes, remove contact lenses if possible, consult a physician if redness or pain continues
Ingestion: Rinse mouth, do not induce vomiting, drink water to dilute if advised, seek medical care if feeling unwell

Fire-Fighting Measures

Flammability: Not combustible but may decompose on strong heating
Suitable Extinguishing Media: Use water spray, dry chemical, CO2, or foam suitable for surrounding fire
Special Hazards: Generates sodium oxides and carbon oxides under high temperatures
Protective Equipment for Firefighters: Wear self-contained breathing apparatus and full protective clothing to prevent contact with skin and eyes
Combustion Products: May release irritating fumes and particulates

Accidental Release Measures

Personal Precautions: Evacuate unnecessary personnel, use respiratory protection if ventilation is inadequate, avoid dust generation
Environmental Precautions: Prevent bulk quantities from entering sewers, groundwater, or waterways
Clean-Up Procedures: Sweep up or collect spilled material with minimal dust, transfer to labeled containers for disposal, clean area with water after removal, ventilate as necessary

Handling and Storage

Handling: Avoid inhaling dust, wear basic eye and hand protection when working with powders, wash hands after use, keep away from sources of ignition and strong acids
Storage: Store in tightly sealed containers, dry and cool environment, away from incompatible substances like strong acids or oxidizers, label containers clearly, and keep storage area clean and organized

Exposure Controls and Personal Protection

Exposure Limits: No established OSHA or ACGIH exposure limits for sodium acetate
Engineering Controls: Use local exhaust ventilation for powder handling
Personal Protection: Wear safety goggles, gloves (nitrile or latex preferred), laboratory coat, dust mask if large amounts are handled, wash hands thoroughly before eating or drinking
Hygiene Measures: Avoid eating, drinking, or smoking in areas where sodium acetate is used, ensure clean workspaces, launder clothing regularly

Physical and Chemical Properties

Appearance: White, odorless crystalline powder
Molecular Weight: 82.03 g/mol (anhydrous), 136.08 g/mol (trihydrate)
Melting Point: 324°C (anhydrous), 58°C (trihydrate)
Boiling Point: Decomposes before boiling
Density: 1.528 g/cm³ (anhydrous)
Solubility: Highly soluble in water
pH (5% solution): About 8.9
Odor: None
Vapor Pressure: Negligible at ambient conditions
Partition Coefficient: Not applicable

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions
Hazardous Polymerization: Will not occur
Incompatible Materials: Strong oxidizers, strong acids
Conditions to Avoid: Excessive heat, humidity, contact with acids
Decomposition Products: Sodium oxide, carbon dioxide, acetic acid fumes
Reactivity: Not reactive under normal conditions

Toxicological Information

Acute Toxicity: Low toxicity; LD50 (oral, rat) reported around 3530 mg/kg
Skin Irritation: May cause mild irritation on sensitive skin or prolonged contact
Eye Irritation: Exposure can result in mild, temporary irritation or redness
Chronic Effects: No evidence of organ toxicity, sensitization, carcinogenicity, mutagenicity, or reproductive effects in typical laboratory use
Inhalation: Dust may cause transient respiratory irritation in large quantities
Ingestion: Considered of low risk if small amounts are swallowed

Ecological Information

Environmental Toxicity: Not considered environmentally hazardous in small scaled applications due to high solubility and biodegradability
Aquatic Toxicity: Low; expected to have limited impact on aquatic organisms at routine discharge levels
Bioaccumulation: Low potential
Mobility in Soil: High water solubility enables rapid dissipation
Degradability: Rapidly biodegrades to naturally occurring sodium and acetate ions

Disposal Considerations

Waste Disposal Method: Dispose of in accordance with local, regional, and national regulations
Containers: Rinse empty containers several times, treat as non-hazardous unless heavily contaminated with other substances
Environmental Cautions: Avoid release of significant quantities into surface waters or soil
Recycling: Not likely cost-effective for most users, though uncontaminated material may be reused in process if purity maintained

Transport Information

UN Number: Not classified as hazardous for transport
Proper Shipping Name: Sodium Acetate
Transport Hazard Class: Not a dangerous good under transport regulations (DOT, IATA, IMDG)
Packing Group: Not assigned
Special Precautions: Keep containers tightly closed to avoid moisture and contamination during transit

Regulatory Information

OSHA: Not hazardous under OSHA Hazard Communication Standard
TSCA Status: Sodium acetate is listed on the TSCA inventory
SARA Title III: No reporting required under Sections 302, 304, or 313
REACH: Registered for uses throughout European Union
Other Requirements: Not subject to California Proposition 65 warnings, not designated as a marine pollutant
Label Requirements: General chemical labeling with name, CAS, and hazard classification only if blended with hazardous substances