Agriculture Grade Ammonium Sulfate Nitrogen Fertilizer for Crop Growing

Ammonium Sulfate ((NH₄)₂SO₄, CAS:7783-20-2) is a classic high-efficiency sulfur-containing nitrogen fertilizer refined from by-product of caprolactam and chemical tail gas recovery process. It appears as off-white or pale crystalline granule or uniform crystal powder, soluble rapidly in water with stable physical property, non-caking under regular storage condition. Containing 20.5%~21% nitrogen and around 24% sulfur element, it belongs to physiological acidic nitrogen fertilizer with slow and lasting fertilizer efficiency, not prone to nitrogen loss via volatilization compared with ammonium bicarbonate. Our products go through multi-stage purification and crystallization screening to control low free acid and impurity content, conform to national agricultural fertilizer standard, widely used for field crops, fruit trees, vegetables and cash crops across global planting industry, also applicable as industrial raw material for chemical synthesis and biochemical processing.

Applications
**Field Crops Basal & Top Dressing Fertilization**: Core nitrogen-sulfur dual-nutrient fertilizer for wheat, corn, rice, cotton and soybean. Applied as base fertilizer during soil preparation or topdressing in seedling and booming stage; nitrogen promotes leaf growth and chlorophyll synthesis while sulfur participates in amino acid and protein formation inside crops, effectively boosting crop yield and improving grain plumpness. Especially suitable for alkaline and calcareous farmland where soil available sulfur is insufficient.
**Vegetables, Fruits and Cash Crop Cultivation**: Widely used on fruit trees, greenhouse vegetables, tobacco, tea leaves and flowers. Supplement nitrogen and sulfur synchronously to improve fruit sweetness, fruit setting rate and leaf quality of tea and tobacco, enhance crop stress resistance against drought and diseases. It can be spread on soil surface, buried in soil or dissolved for flushing fertilization with irrigation water.
**Seedling Nursery & Seed Dressing Treatment**: Safe nitrogen fertilizer for seedling bed of rice and vegetable seedlings with mild fertilizer efficiency and low burning-seed risk; diluted ammonium sulfate solution can be used for seed soaking and seed dressing to boost seed germination rate and cultivate robust seedlings.
**Industrial Raw Material Usage**: Serves as raw material for ammonium salt, ammonium alum production; used as protein precipitant in biochemical industry, additive for electroplating solution and fermentation medium auxiliary agent in antibiotic manufacturing.
**Compound Fertilizer Blending Additive**: Important raw material for blending high-nitrogen compound fertilizer and BB fertilizer, cooperating with phosphate fertilizer and potash fertilizer to realize balanced nutrient supply for crops and optimize finished fertilizer formula.

Product Advantages
✅ Balanced nitrogen and sulfur nutrition to fix sulfur deficiency problems which common urea cannot solve, significantly improve crop quality especially for sulfur-loving crops like garlic, onion and rape.
✅ Stable crystal property with low moisture and free acid, difficult to agglomerate during long-term storage and long-distance marine transportation.
✅ Slow-release fertilizer efficiency, longer effective period than quick-acting urea, reducing multiple topdressing frequency for farmers and lowering labor cost.
✅ Strict finished product screening to control uniform granule size, convenient for mechanical spreading and manual fertilization.
✅ Complete COA and MSDS documents provided for export customs clearance; sufficient spot stock to support small pallet trial order and full-container bulk order.

Packaging & Storage
Standard 50kg inner PE lined woven bag; ton jumbo bag is available for large-scale bulk purchase. Store goods in dry, cool and well-ventilated warehouse, keep packages sealed tightly, isolate from alkaline fertilizer such as calcium oxide, calcium hydroxide and strong alkaline chemicals to avoid ammonia gas volatilization and nutrient failure. Prevent rainwater soaking and long-term damp stacking. Valid shelf life reaches 24 months under standard dry sealed storage.

Safety Information
Ordinary inorganic agricultural fertilizer, non-toxic and non-flammable. Avoid long-time massive inhalation of crystal dust; wear simple dust mask during loading and unpacking. Non-dangerous goods suitable for land, sea and air conventional transportation. In case of accidental eye contact with solid powder, wash eyes with abundant clean water immediately.

1. 1.A 70,000 ㎡ warehouse (20,000 MT capacity) with moisture-proof and temperature-controlled systems, enabling efficient fulfillment of large-volume orders.
2. 2.Free samples (Ship within 3-7 days) to let you test products at zero trial cost.
3. 3.Transparent lead time for hazardous chemicals: 45–60 days, with clear delivery schedules.
4. 4.Certified with a Hazardous Chemical Business License and ISO certification, ensuring smooth customs clearance.
5. 5.6 packaging options with customizable logos to minimize product loss during transportation.
6. 6.Over 400 chemical SKUs available for one-stop procurement, helping you reduce sourcing costs.