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Product Name: Sodium Sulfate Anhydrous
Chemical Formula: Na2SO4
EC Number: 231-820-9
CAS Number: 7757-82-6
Synonyms: Disodium sulfate, Sulfate of soda
Intended Use: Used in detergents, glass manufacturing, chemical synthesis, textiles, and paper processing
Supplier Information: Provide manufacturer’s or supplier’s full address, phone, and emergency contact details for efficient response in case of incident
Classification: Does not meet GHS criteria for hazardous substances
Signal Word: None assigned
Hazard Statements: May cause minor irritation to eyes, skin, and respiratory tract through dust exposure
Precautionary Statements: Avoid generating or inhaling dust, wash skin thoroughly after handling, and use proper ventilation
Potential Acute Health Effects: Eye irritation, coughing upon inhalation, mild digestive upset if ingested
Potential Chronic Health Effects: Inhalation of large quantities of dust over time may aggravate respiratory conditions
Chemical Name: Sodium Sulfate Anhydrous
Concentration: Over 99% purity
Impurities: Trace quantities of sodium chloride, carbonate, and insolubles dependent on grade and origin
Eye Contact: Rinse thoroughly with clean water for at least 15 minutes, remove contact lenses if easily possible, seek medical attention if irritation persists
Skin Contact: Remove any contaminated clothing and wash exposed skin areas with water; soap may be used for persistent dust
Inhalation: Move affected individual to fresh air, provide rest, seek medical advice if symptoms like coughing or respiratory distress worsen
Ingestion: Rinse mouth with water, drink water to dilute, avoid forced vomiting, and contact a medical professional for further advice
Note to Physicians: Treatment should focus on alleviating symptoms; no specific antidote is known for sodium sulfate exposure
Flammability: Nonflammable and noncombustible substance
Extinguishing Media: Use appropriate extinguishing agents for surrounding area fires: water spray, foam, dry chemical, or carbon dioxide
Special Hazards: In fire involving other materials, toxic sulfur oxides may form if heated above decomposition point
Protective Equipment: Firefighters should use full protective gear and self-contained breathing apparatus when handling residual fumes
Advice: Contain water runoff to prevent environmental contamination, especially in closed drainage or natural bodies of water
Personal Precautions: Use personal protective equipment such as dust mask, gloves, and goggles to minimize exposure
Environmental Precautions: Prevent substance from entering waterways or sewer systems, take steps to contain large releases
Methods for Containment: Sweep carefully to avoid raising dust clouds, collect using approved equipment and transfer into labeled containers
Methods for Cleaning Up: Clean surfaces thoroughly after removal, ventilate area if excess dust has accumulated, use vacuum with HEPA filter if possible
Disposal Considerations: See disposal guidelines further below for regulatory details
Safe Handling: Avoid dust formation, use local exhaust ventilation if available, wear protective gear to reduce skin and eye contact risk
Hygienic Practices: Wash hands thoroughly before eating, drinking, or smoking after working with sodium sulfate
Storage Conditions: Store in a dry, well-ventilated area protected from moisture, keep container tightly closed to prevent hygroscopic absorption of water
Incompatibilities: Keep away from strong acids which can react and form sulfur dioxide, avoid storage with reactive oxidizers
Special Packaging: Use containers made from compatible materials, clearly label all storage units to avoid confusion
Occupational Exposure Limits: No established permissible exposure limit for sodium sulfate dust; some local jurisdictions recommend general nuisance dust limits (e.g., OSHA PEL: 15 mg/m³ total dust, 5 mg/m³ respirable fraction for particulates not otherwise classified)
Engineering Controls: Install adequate ventilation systems, especially in enclosed production environments or where mechanical processing creates dust
Personal Protective Equipment: Wear safety goggles or face shield, gloves resistant to chemical irritation, dust mask or certified respirator in high-dust zones
Work Practices: Minimize direct contact by using scoops or shovels, do not eat, drink, or smoke during handling
Monitoring: Conduct periodic workplace air sampling to assure compliance with exposure control guidelines
Appearance: White, crystalline powder or granules
Odor: Odorless
pH: Neutral in water solution (6.0–8.5 for 5% solution)
Boiling Point: Not applicable (decomposes)
Melting Point: Approximately 888 °C (1630 °F)
Molecular Weight: 142.04 g/mol
Solubility: Highly soluble in water (approximately 20 g/100 ml at 20 °C), practically insoluble in alcohol
Specific Gravity: 2.7 (water = 1)
Vapor Pressure: Not volatile
Partition Coefficient: Not available
Decomposition: Releases sulfur oxides at high temperatures above 1000 °C
Chemical Stability: Stable under normal storage and handling conditions
Thermal Stability: Does not decompose at ambient temperature; decomposition begins at elevated temperatures with formation of sulfur oxides
Incompatible Materials: Strong acids such as hydrochloric acid, concentrated sulfuric acid, or reducing agents
Hazardous Decomposition Products: Sulfur dioxide gas forms if exposed to extreme heat or strong acids
Hazardous Polymerization: Does not occur
Conditions to Avoid: Prevent exposure to damp air and open flames; store away from incompatible substances
Acute Toxicity: Ingestion of large quantities may cause diarrhea and discomfort due to its osmotic effects
Inhalation: Dust may irritate upper respiratory passages; symptoms might include coughing and sneezing
Skin Contact: May cause transient dryness, cracking, or irritation in frequent contact
Eye Contact: Dust contact leads to watering, stinging, or redness; severe effects are rare
Chronic Effects: Extended exposure to dust in poorly ventilated environments could aggravate chronic respiratory problems
Carcinogenicity: Not classified as carcinogenic by ACGIH, IARC, NTP, or OSHA
Reproductive Toxicity: Studies show no known risk of reproductive or developmental harm in typical industrial use
Sensitization: Not known to cause allergic sensitization
Ecotoxicity: Sodium sulfate exhibits low acute toxicity for aquatic organisms; fish, daphnia, and algae generally tolerate moderate concentrations
Persistence/Degradability: Readily dissociates into sodium and sulfate ions in water, does not persist as a contaminant in natural environments
Bioaccumulation: Not likely to bioaccumulate in food chains due to high water solubility and dissociation
Mobility in Soil: High solubility leads to quick migration through soils; possible leaching into groundwater at high concentrations
Additional Information: Large releases into waterways may temporarily disturb aquatic environments, particularly by increasing total dissolved solids
Waste Treatment Methods: Dispose in accordance with local, state, and federal regulations; generally considered non-hazardous waste
Contaminated Packaging: Rinse empty containers before recycling or landfilling, ensure no dust remains that may disperse
Reuse Considerations: Residual product leftover from process streams can be used for other suitable industrial applications if free of contamination
Environmental Precautions: Prevent significant discharge into surface water or municipal sewer systems where dilution processes may fail
UN Number: Not regulated as a dangerous good
UN Proper Shipping Name: Not applicable
Transport Hazard Class: Not classified as hazardous for transport by air, sea, or land
Packing Group: Not applicable
Environmental Hazards: Not a marine pollutant, no hazardous properties identified under current transport regulations
Special Precautions: Secure containers to prevent spillage during transit, avoid shipment with incompatible chemicals
International Regulations: Listed on major inventories such as TSCA (USA), EINECS (Europe), DSL (Canada), and AICS (Australia)
OSHA Status: Generally recognized as non-hazardous substance under typical workplace exposure conditions
SARA Title III: Not subject to reporting under Section 302, 304, or 313
California Proposition 65: Not listed
Other Local/Regional Requirements: Store and use in accordance with all applicable national, state, and municipal regulations, especially for workplace safety and environmental control
Labeling Requirements: Ensure clear hazard communication on all packaging as per GHS or equivalent regional guidelines
