



Ammonium sulphate
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Ammonium Sulphate [(NH₄)₂SO₄] is a white crystalline salt widely used as a high-efficiency fertilizer, providing 21% nitrogen and 24% sulfur for optimal plant growth. It improves soil fertility, lowers pH in alkaline soils, and enhances crop yields. Beyond agriculture, it serves as a flame retardant, protein purification agent in labs, dough conditioner (E517) in food processing, and dye auxiliary in textiles. Soluble in water, it’s also used in water treatment, leather tanning, and industrial chemicals. A cost-effective dual-nutrient source, it’s ideal for sulfur-deficient soils.
AMMONIUM SULPHATE USES
Agriculture (Primary Use)
- Nitrogen & Sulfur Fertilizer: Provides essential nutrients (21% nitrogen + 24% sulfur) for plant growth, improving soil fertility and crop yield.
- Soil pH Adjustment: Lowers pH in alkaline soils, benefiting acid-loving plants.
- Compatibility: Often blended with other fertilizers.
Industrial Applications
- Flame Retardant: Used in fireproofing fabrics and wood.
- Textile Industry: Acts as a dye auxiliary in synthetic fiber production.
- Leather Tanning: Helps in mineral tanning processes.
- Food Additive: FDA-approved as a dough conditioner (E517) in bread-making.
Laboratory & Chemical Uses
- Precipitation Agent: Purifies proteins in biochemistry (e.g., “salting out” in protein purification).
- Chemical Synthesis: A source of ammonium ions in reactions.
Water Treatment
- Chlorine Stabilizer: Used in swimming pools to reduce chlorine loss.
Other Uses
- Yeast Nutrient: Supports fermentation in brewing and baking.
- Battery Electrolyte: Found in some lead-acid batteries
AVAILABLE PACK SIZE |
25kg( Metal or Plastic Jerrycan/ Bucket, Bag, Box, Polythene bag, Carton bag) ,50kg( Metal or Plastic Jerrycan/ Bucket, Bag, Box, Polythene bag, Carton bag) |
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APPEARANCE |
Crystalline |
1. Basic Identification Attributes
- Chemical Name: Ammonium sulfate (IUPAC)
- CAS Number: 7783-20-2
- HS Code: 3102.21.00 (Fertilizer grade)
- Molecular Formula: (NH₄)₂SO₄
- Synonyms:
- Diammonium sulfate
- Sulfuric acid diammonium salt
- Ammonium sulphate (UK spelling)
2. Physical & Chemical Properties
- Physical State: White crystalline solid (powder or granules)
- Color & Odor: White; odorless
- Boiling Point: Decomposes at ~280°C (releases NH₃ and forms (NH₄)HSO₄)
- Melting Point: 235–280°C (decomposes)
- Density/Specific Gravity: 1.77 g/cm³
- Solubility:
- Highly soluble in water (70.6 g/100 mL at 0°C; 103.8 g/100 mL at 100°C)
- Insoluble in acetone, alcohol, and ether
- pH Level: 5–6 (1% solution; weakly acidic)
- Vapor Pressure: Negligible at room temp
- Flash Point: Non-flammable
- Autoignition Temperature: N/A
- Viscosity: N/A (solid)
3. Safety & Hazard Attributes
- Hazard Class (GHS):
- Not classified as hazardous (most grades)
- May cause eye/skin irritation(powder form)
- Inhalation risk(dust may irritate respiratory tract)
- NFPA Ratings:
- Health: 1| Flammability: 0 | Reactivity: 0
- Exposure Limits:
- OSHA PEL (TWA): 15 mg/m³ (total dust); 5 mg/m³ (respirable fraction)
- ACGIH TLV: 10 mg/m³ (inhalable particulate)
- Reactivity:
- Incompatible with strong bases(releases ammonia gas)
- Reacts with nitratesor chlorates (explosive hazard)
4. Storage & Handling Attributes
- Storage Conditions:
- Cool, dry, well-ventilated area
- Keep away from moisture (hygroscopic) and incompatible chemicals
- Incompatible Materials:
- Strong bases (e.g., NaOH, KOH)
- Nitrates (e.g., KNO₃), chlorates (e.g., NaClO₃)
- Container Type:
- Plastic (HDPE) or fiber drums with liners
- Shelf Life: Indefinite if stored properly
- Special Handling:
- Dust mask and goggles recommended for powder handling
5. Regulatory & Compliance Attributes
- Regulatory Status:
- FDA: GRAS (Generally Recognized As Safe) for food use (e.g., dough conditioner)
- EPA: Listed as a fertilizer; not a hazardous waste
- REACH: Registered for industrial/agricultural use
- Hazard Symbols (GHS): None (non-hazardous in pure form)
- Transportation Restrictions:
- UN Number: None (non-hazardous for transport)
- Waste Disposal:
- Dispose as general waste or recycle for fertilizer use
6. Environmental & Health Impact
- Ecotoxicity:
- Low toxicity to aquatic life (LC50 >100 mg/L for fish)
- May cause eutrophicationin water bodies (high N content)
- Persistence:
- Dissociates into NH₄⁺ and SO₄²⁻ in water/soil
- Carcinogenicity:
- Not listed by IARC/NTP/OSHA
- Biodegradability:
- NH₄⁺ converts to nitrate (NO₃⁻) via microbial action
Personal Protection:
- Gloves:Wear nitrile or rubber gloves to prevent skin irritation.
- Eye Protection:Use safety goggles when handling powder or solutions.
- Respiratory Protection:Dust mask (NIOSH N95) recommended when handling large quantities of powder.
- Clothing:Wear long sleeves and pants to minimize skin exposure.
Handling & Storage:
- Ventilation:Ensure good ventilation in enclosed areas to avoid dust accumulation.
- Avoid Contact:Prevent skin, eye, and respiratory exposure.
- Storage:Keep in a cool, dry, well-ventilated area away from moisture, strong bases, and oxidizing agents.
- Hygiene:Wash hands and exposed skin thoroughly after handling.
Incompatibilities:
- Avoid contact with strong bases(e.g., sodium hydroxide, potassium hydroxide) → Releases toxic ammonia gas.
- Keep away from strong oxidizers(e.g., nitrates, chlorates) → Fire/explosion risk.
Inhalation (Dust Exposure):
- Move to fresh air immediately.
- If breathing is difficult, seek medical attention.
Skin Contact:
- Remove contaminated clothing.
- Wash affected area with soap and water for at least 15 minutes.
- If irritation persists, seek medical advice.
Eye Contact:
- Rinse immediately with plenty of water for at least 15 minutes, holding eyelids open.
- Seek medical attention if irritation continues.
Ingestion (Swallowing):
- Rinse mouth with water.
- Drink plenty of water to dilute.
- Do NOT induce vomiting.
- Seek medical attention if large amounts are ingested or symptoms occur.
Fire Hazards:
- Non-flammable, but decomposes at high temperatures (> 280°C), releasing toxic fumes (ammonia, sulfur oxides, nitrogen oxides).
Suitable Extinguishing Media:
- Water spray, CO₂, dry chemical powder, or foamfor surrounding fires.
Protection for Firefighters:
- Wear self-contained breathing apparatus (SCBA)due to toxic decomposition fumes.
- Avoid inhalation of smoke/fumes.
Special Considerations:
- Cool containers exposed to fire with water spray to prevent rupture.
- Prevent runoff from entering drains or water sources (environmental hazard).
Spill & Leak Response:
- Small Spills:Sweep up or absorb with inert material (e.g., sand, vermiculite) and dispose of properly.
- Large Spills:Contain spill, wear PPE, and collect for proper disposal. Avoid water if possible (prevents runoff).
Disposal:
- Follow local environmental regulations for disposal. Do not release into waterways
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