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Product Name: Magnesium Sulfate Heptahydrate
Chemical Formula: MgSO4 · 7H2O
Molecular Weight: 246.47 g/mol
Common Names: Epsom Salt, Bitter Salt
Recommended Use: Laboratory reagents, soil additive, bath salts, pharmaceutical preparations
Supplier Information: Name, address, contact number of manufacturer or distributor
Emergency Phone: Local poison control or manufacturer hotline
CAS Number: 10034-99-8
EC Number: 231-298-2
GHS Classification: Not classified as hazardous according to GHS
Label Elements: No symbol or signal word required
Hazard Statements: Not expected to be hazardous under normal conditions
Precautionary Statements: May cause mild irritation to eyes or skin with prolonged exposure
Routes of Exposure: Inhalation, ingestion, contact with eyes and skin
Potential Health Effects: Ingestion of large amounts may cause diarrhea or gastrointestinal upset; eye contact may result in mild irritation
Environmental Effects: Can contribute to nutrient loading in water bodies if released in significant quantities
Chemical Name: Magnesium sulfate heptahydrate
Concentration: 99%–100%
Impurities: Trace elements (minimal levels, varies by supplier)
Synonyms: Epsomite, Saline cathartic
Inhalation: Move person to fresh air, seek medical attention if symptoms like coughing or difficulty breathing occur
Eye Contact: Rinse thoroughly with water for at least 15 minutes; remove contact lenses if present and easy to do so; get medical advice if irritation persists
Skin Contact: Wash exposed skin with soap and water; remove contaminated clothing; medical attention for persistent irritation
Ingestion: Rinse mouth with water; drink water to dilute; do not induce vomiting; seek medical attention for large amounts or if symptoms occur
Most Important Symptoms: Mild irritation, upset stomach, diarrhea; no delayed or immediate serious symptoms known
Advice for Physicians: Treat symptomatically; large ingestion may need supportive therapy
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Extinguishing Media: No restrictions identified
Specific Hazards: Not flammable; does not contribute fuel to fires
Hazardous Decomposition Products: Magnesium oxide and sulfur oxides at high temperatures
Protective Equipment For Firefighters: Wear self-contained breathing apparatus and full protective clothing in a fire situation
Other Information: Product does not support combustion and poses minimal fire risk
Personal Precautions: Avoid dust generation; use personal protective equipment such as gloves and goggles
Environmental Precautions: Prevent entry into drains or waterways; recover material for reuse or proper disposal
Cleanup Methods: Sweep up or vacuum spill; collect in closed containers for reuse or disposal; wash area with water
Reporting: No special reporting requirements for small amounts
Handling Practices: Use only in well-ventilated areas; avoid breathing dust; avoid prolonged or repeated skin and eye contact
Personal Hygiene: Wash hands thoroughly after handling; take off contaminated clothing and wash before reuse
Compatibility: Store away from strong acids; avoid contact with strong oxidizers
Storage Conditions: Store in a cool, dry, well-ventilated area; keep container tightly closed to avoid moisture uptake
Special Requirements: Store away from food and feed; maintain labels on containers
Occupational Exposure Limits: No established limits for magnesium sulfate heptahydrate
Engineering Controls: Use local exhaust ventilation in areas of dust generation
Personal Protective Equipment:
Appearance: White crystalline solid
Odor: Odorless
Melting Point: 150°C (decomposes, loses water of crystallization)
Boiling Point: Not applicable (decomposes before boiling)
Solubility in Water: 70 g/100 mL at 20°C
Vapor Pressure: Not volatile
Specific Gravity: 1.67 (water = 1)
pH (solution): 5.0 – 9.0 (5% solution)
Flash Point: Not flammable
Partition Coefficient (n-octanol/water): Not available
Evaporation Rate: Not applicable
Chemical Stability: Stable under normal storage and handling conditions
Reactivity: No dangerous reactions known under recommended use
Incompatibility: Strong acids, strong oxidizers
Hazardous Decomposition: Decomposes at high temperatures producing sulfur oxides and magnesium oxide
Polymerization: No risk of hazardous polymerization
Acute Toxicity: Low toxicity by oral and dermal routes; LD50 (oral, rat) > 5000 mg/kg
Skin Corrosion/Irritation: Mild, not considered corrosive
Serious Eye Damage/Irritation: Possible mild transient irritation
Respiratory or Skin Sensitization: No known sensitizing effects
Chronic Effects: No reliable data suggesting significant chronic hazard
Carcinogenicity, Mutagenicity, Reproductive Toxicity: Not classified based on available data
Medical Conditions Aggravated: People with gastrointestinal sensitivities may respond to ingestion
Toxicity to Aquatic Organisms: Low toxic potential for aquatic species at environmental concentrations
Persistence and Degradability: Readily dissociates into ions in water; does not persist as a whole compound
Bioaccumulation Potential: Not expected to bioaccumulate
Mobility: High solubility increases movement in water
Other Environmental Information: Excessive magnesium sulfate discharged into water systems can alter aquatic nutrient balances
Waste Treatment Methods: Dispose as non-hazardous chemical waste; local regulations apply
Container Handling: Rinse empty containers and offer for recycling or disposal according to national requirements
Special Instructions: Avoid disposal in surface waters to prevent ecological impact
Recommended Disposal: Use landfill or authorized chemical waste incinerator if not reused
UN Number: Not regulated
UN Proper Shipping Name: Not classified as dangerous goods
Transport Hazard Class: Not assigned
Packing Group: Not assigned
Environmental Hazard: Not classified as environmentally hazardous for transport
Special Precautions: Protect from moisture during transport; ensure containers are well-sealed
International Inventories: Listed in many national and international chemical inventories including USA TSCA, EU EINECS/ELINCS
OSHA Hazards: Not hazardous
SARA Title III: Not listed as a hazardous substance
California Proposition 65: Not listed
Other Local Regulations: Follow local, regional, and national rules for handling and storage
Label Requirements: Common labeling for identification and safe use
