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Product Name: Ammonium Sulphate
Chemical Formula: (NH4)2SO4
CAS Number: 7783-20-2
Synonyms: Diammonium sulfate, sulfuric acid diammonium salt, mascagnite
Recommended Use: Fertilizer, food additive, laboratory reagent, water treatment
Manufacturer Details: Manufacturer name, address, and emergency telephone to be filled as per packaging supplier
Emergency Contact: Local poison control or fire authority
GHS Classification: Not classified as hazardous under GHS
Hazard Statements: Eye and respiratory irritation possible if dust inhaled
Signal Word: None
Pictogram: No classification pictogram
Precautionary Statements: Avoid dust generation. Use adequate ventilation. Wear personal protective equipment to minimize contact.
Health Hazards: Prolonged skin contact may cause mild irritation. Inhalation of dust may cause throat and lung discomfort. Ingestion in large quantities can upset the gastrointestinal tract.
Environmental Hazards: May cause nutrient imbalance and eutrophication in waterways if released in large amounts
Chemical Name: Ammonium Sulphate
Concentration: Typically 99% pure
Impurities: May contain trace elements such as iron, manganese, or moisture below 1%
Ingredient Description: Inorganic salt derived from ammonia and sulphuric acid
Hazardous Components: None above relevant thresholds
Inhalation: Remove person to fresh air, seek medical advice if symptoms such as coughing persist
Skin Contact: Wash with plenty of soap and water. Remove contaminated clothing.
Eye Contact: Rinse gently with water for at least 15 minutes, lifting eyelids. If irritation persists, get medical advice.
Ingestion: Rinse mouth with water. Drink moderate amounts of water to dilute. Do not induce vomiting unless directed by medical staff. Seek medical attention for large accidental consumption.
Acute Symptoms: Coughing, mild respiratory tract irritation, mild skin irritation
Long-Term Effects: No significant effects reported in human exposure studies at normal concentrations
Suitable Extinguishing Media: Use water spray, foam, carbon dioxide, or dry chemical extinguishers
Unsuitable Media: Avoid high-pressure water jets which may spread the dust
Hazardous Combustion Products: Decomposition in fire can release ammonia and sulphur oxides
Fire-Fighter Protection: Wear self-contained breathing apparatus and protective gear
Special Precautions: Product does not burn but will decompose under intense heat, releasing toxic vapors
Explosion Hazard: Fine dust could pose mild risk of dust explosion in rare, extremely high dust concentration scenarios
Personal Precautions: Use recommended personal protective equipment such as dust mask, gloves, goggles
Environmental Precautions: Do not allow uncontrolled entry into drains or waterways
Containment Methods: Sweep up spillage to prevent dust clouds. Collect in dry, suitable, labeled containers.
Cleanup Procedures: Use non-sparking tools. Moisten surfaces to suppress dust if needed. Dispose according to local requirements.
Spill Volume Response: Small spills can be cleaned with damp cloths or mops. Larger spills require use of mechanical pick-up and containment protocols
Precautions for Handling: Keep container tightly closed when not in use. Avoid creating dust. Use local exhaust ventilation in high-use areas.
Hygiene Practices: Wash thoroughly after handling. Do not eat, drink, or smoke while using the product.
Safe Storage Conditions: Store in cool, dry, well-ventilated area away from incompatible substances such as oxidizers. Keep away from moisture and sources of ammonia gas.
Packaging Materials: Store in fibreglass, polyethylene, or corrosion-resistant bins
Incompatibilities: Strong bases, strong oxidizing agents, alkalis, calcium hypochlorite, nitrates
Occupational Exposure Limits: No official OSHA or ACGIH limits; recommended to keep dust below 10 mg/m3 (inhalable fraction)
Engineering Controls: Local exhaust ventilation, process enclosure, dust collection
Eye/Face Protection: Safety goggles or face shields for bulk handling
Skin Protection: Wear nitrile gloves and long sleeves to minimize skin contact
Respiratory Protection: Dust mask or respirator when airborne dust exceeds safe limits
General Measures: Keep work areas clean. Follow good industrial hygiene practices
Appearance: White to off-white crystalline solid
Odor: Odorless or slight ammonia odor
pH (10% solution): Approximately 5.5 – 6.5
Melting Point: Decomposes above 235°C (455°F)
Boiling Point: Not applicable (decomposes before boiling)
Vapor Pressure: Not volatile
Solubility: 760 g/L in water at 20°C
Density: 1.77 g/cm3 at 20°C
Partition Coefficient (log Kow): Not applicable
Evaporation Rate: Not applicable
Flash Point: Not flammable
Auto-Ignition Temperature: Not determined
Explosive Properties: Not explosive under normal conditions
Chemical Stability: Stable under recommended storage conditions
Reactivity: No known hazardous reactions under normal use
Conditions to Avoid: Excess heat, moisture, exposure to strong acids and strong oxidizers
Hazardous Decomposition Products: Ammonia gas, sulphur oxides released during thermal decomposition
Incompatible Materials: Calcium hypochlorite, strong alkalis, nitrates, oxidizing substances
Acute Toxicity: Oral LD50 (rat) ≈ 2840 mg/kg
Skin Irritation: Low, no significant hazard under typical conditions
Eye Irritation: May cause mild, transient irritation
Respiratory Sensitization: Dust can cause coughing, throat irritation on heavy exposure
Chronic Effects: Unlikely with occupational levels; studies show low chronic risk
Carcinogenicity: No evidence
Mutagenicity and Reproductive Toxicity: No evidence from standard studies
Acute Aquatic Toxicity: LC50 (fish, 96 hours) ≈ 420 mg/L
Persistence and Degradability: Readily dissociates in soil and water, releases ammonium and sulfate ions
Bioaccumulation: Does not bioaccumulate
Mobility in Soil: High; leaching possible, especially in sandy soils
Other Adverse Effects: Large discharges contribute to eutrophication and oxygen depletion in water bodies
Disposal Methods: Dispose through authorized waste contractor following local environmental regulations
Contaminated Packaging: Clean before recycling or disposal; follow local restitution guidelines
Environmental Caution: Prevent product from entering water supplies, sewers, and natural water bodies in significant quantities
Special Precautions: Solutions and slurries to be treated as chemical waste suitable for neutralization and dilution
UN Number: Not regulated as a dangerous good
Proper Shipping Name: Ammonium Sulphate
Transport Hazard Class(es): Not classified
Packing Group: Not assigned
Marine Pollutant: No
Special Transport Precautions: Keep dry in transit. Secure loads to prevent shifting and spills.
OSHA: Not hazardous under OSHA Hazard Communication Standard
TSCA (USA): Listed
REACH (EU): Registered and compliant
WHMIS (Canada): Not controlled
Other Regulations: Not specifically regulated under most country safety laws for normal use
Labeling Recommendations: Clearly label secondary containers. Provide standard cautions for dust and eye contact.
