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Product Name: Ammonium Sulfate
Chemical Formula: (NH4)2SO4
Common Synonyms: Diammonium sulfate, Sulfate of ammonia
Recommended Uses: Fertilizer, agricultural nutrient additive, flame retardant, food additive
Manufacturer Contact: Name, address, emergency phone number, email
CAS Number: 7783-20-2
Emergency Overview: Solid granules or crystals with a slight ammonia odor; often white to off-white in color
Classification: Not classified as hazardous under GHS; low acute toxicity
Main Hazards: Causes eye irritation, may cause mild skin irritation, dust may irritate respiratory tract
Signal Word: None required
Pictograms: None required under GHS
Hazard Statements: May cause slight eye and respiratory irritation, inhaling large amounts can produce cough
Precautionary Statements: Avoid breathing dust, avoid contact with eyes and prolonged skin contact
Other Hazards: Not flammable, but in a fire, decomposes to release toxic gases like ammonia and sulfur oxides
Chemical Name: Ammonium Sulfate
Concentration: Typically >98%
CAS Number: 7783-20-2
Impurities: Minor traces of iron, magnesium, moisture content varies
Molecular Weight: 132.14 g/mol
Eye Contact: Rinse gently with plenty of water for several minutes, remove contact lenses if present, continue rinsing, get medical attention for persistent irritation
Skin Contact: Wash with soap and water, remove contaminated clothing, seek care if irritation develops
Inhalation: Move individual to fresh air, seek care if symptoms persist or breathing becomes difficult
Ingestion: Rinse mouth, drink water if alert, do not induce vomiting, seek advice from medical professionals
Most Important Symptoms: Mild irritation of eyes, skin, airway; possible cough or nausea if large amounts are inhaled or swallowed
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Specific Hazards: Not flammable, but thermal decomposition releases ammonia, nitrogen oxides, and sulfur oxides
Protective Equipment: Wear self-contained breathing apparatus and full protective gear
Special Procedures: Keep containers cooled with water if exposed to flames, control run-off to prevent environmental contamination
Explosion Risk: Not explosive under normal conditions
Personal Precautions: Wear dust mask, protective gloves, safety goggles
Environmental Precautions: Prevent entry into waterways, drains, and soil, inform relevant authorities in case of large release
Containment: Sweep up to avoid creating dust, avoid contact with skin and eyes
Cleanup Procedures: Collect in suitable containers for proper disposal or reuse, ventilate area, wash remaining material with water
Handling: Avoid generating dust, use with adequate ventilation, wash hands after use, do not eat or drink while handling
Storage: Store in cool, dry, well-ventilated places, keep away from incompatible substances such as alkalis, oxidizers, and chlorates
Packaging Materials: Use corrosion-resistant containers, keep tightly closed to prevent moisture absorption
Storage Temperature: No specific temperature requirement, but excessive heat and humidity can lead to caking
Occupational Exposure Limits: No OSHA or ACGIH exposure limits; try to keep dust as low as possible
Engineering Controls: Local exhaust ventilation, dust collection systems
Personal Protective Equipment: Safety glasses or chemical goggles, impervious gloves, long-sleeved clothing
Respiratory Protection: Dust mask (N95 or equivalent) during significant exposure
Hygiene Measures: Wash after handling, remove contaminated clothing and wash before reuse
Appearance: Crystalline solid, usually colorless to white
Odor: Slight ammonia
Melting Point: Decomposes above 235°C
pH (solution): 5.0 – 6.0 (1% solution)
Solubility in Water: 764 g/L at 20°C
Vapor Pressure: Negligible
Density: 1.77 g/cm3
Boiling Point: Not applicable (decomposes before boiling)
Flash Point: Not combustible
Other Data: Non-volatile, stable in normal use, strong hygroscopic nature
Chemical Stability: Stable under recommended storage and handling
Reactivity: Reacts with strong bases, releases ammonia; reacts with strong oxidizers
Hazardous Decomposition: Ammonia, nitrogen oxides, sulfur dioxide can form at high temperatures
Polymerization: Will not occur
Conditions to Avoid: High temperature, moisture, contact with incompatible materials
Acute Toxicity: Oral LD50 (rat): >2,000 mg/kg (low toxicity)
Skin Corrosion/Irritation: Mild and reversible irritation possible on prolonged contact
Serious Eye Damage/Irritation: May cause redness, tearing, discomfort
Respiratory or Skin Sensitization: No sensitizing properties recorded
Chronic Effects: No evidence of carcinogenic, mutagenic, reproductive effects
Possible Routes of Exposure: Skin, eyes, inhalation, ingestion
Ecotoxicity: Harmful to aquatic organisms at high concentrations, potential for algal blooms due to nutrient content
Persistence and Degradability: Readily dissociates in water, ammonium and sulfate ions taken up by plants and microbes
Bioaccumulation: Unlikely due to high water solubility
Mobility: Moves rapidly in soil and water, risk of contamination in surface and groundwater if misapplied
Other Effects: Contributes to acidification of soil and water if used excessively
Disposal Methods: Use according to local agricultural recommendations to avoid runoff, excess or waste not usable on land should go to licensed chemical waste facility
Precautions: Prevent from entering drains, water bodies, or sewers
Empty Containers: Rinse and recycle when possible or dispose as per local regulations
Large Spills: Seek advice from waste disposal authority
UN Number: Not regulated by UN Transport
Transport Hazard Class: Not classified as hazardous for transport
Proper Shipping Name: Ammonium Sulfate
Packing Group: Not regulated
Special Precautions: Protect from moisture, keep packaging intact, avoid contact with incompatible chemicals
GHS Classification: Not hazardous
U.S. TSCA Status: Listed
EU REACH Registration: Registered, standard use as fertilizer
Other National Inventories: Included in most hazardous chemical inventories for record-keeping
Labeling Requirements: Avoid breathing dust, wear protective gear when handling in bulk
