Ammonium Sulfate

1. Product Introduction

Ammonium sulfate [(NH₄)₂SO₄], commonly known as ammonium sulphate, is a high-quality inorganic nitrogen fertilizer and industrial chemical with stable physical and chemical properties. It appears as colorless or white crystalline powder, odorless, and soluble in water. With a long application history, it is widely used in agriculture, chemical industry, and food processing fields, favored for its high nitrogen content, low hygroscopicity, and easy storage.

2. Composition

• Active Ingredient: Ammonium sulfate [(NH₄)₂SO₄], with a minimum purity of 99.0% (industrial grade) or 98.5% (agricultural grade).

• Nutrient Content: Total nitrogen (N) content ≥ 21.0% (the core nutrient for plant growth, provided in the form of ammonium ions that are easily absorbed by crops).

• Impurities: Trace amounts of water (moisture ≤ 0.5%), free acid (as H₂SO₄ ≤ 0.05%), and insoluble matter (≤ 0.1%), meeting the standards of GB/T 535-2020 (China) or ASTM D1142-13 (U.S.).

3. Efficacy & Applications

3.1 Agricultural Applications (Main Use)

• Nitrogen Supply: Provides rapid-acting nitrogen to crops (e.g., wheat, rice, corn, cotton, and vegetables), promoting leaf growth, enhancing photosynthesis, and increasing grain yield and quality.

• Soil Adaptability: Suitable for neutral and alkaline soils; the sulfate ions (SO₄²⁻) can also supplement sulfur (a secondary nutrient for crops) and improve soil structure when used moderately.

• Crop-Specific Benefits: Ideal for cash crops like tobacco and tea, as it avoids nitrate accumulation and maintains the unique flavor of the crops.

3.2 Industrial & Other Applications

• Chemical Industry: Used as a raw material for manufacturing ammonium alum, ammonia water, and sulfuric acid; also as a flame retardant in textile and paper industries.

• Food Industry: Approved as a food additive (E517) for dough conditioning, yeast nutrition, and pH adjustment in baked goods.

• Wastewater Treatment: Helps remove heavy metal ions (e.g., lead, cadmium) from industrial wastewater through precipitation reactions.

4. Packaging

To ensure product quality during storage and transportation, we offer two standard packaging options, customizable based on customer needs:

• Bulk Packaging: 50kg/25kg woven plastic bags with inner polyethylene liners (moisture-proof, tear-resistant). Each pallet holds 40 bags (2000kg for 50kg bags) or 80 bags (2000kg for 25kg bags), wrapped with stretch film for stability.

• Bulk Transportation: Suitable for large-quantity orders (≥ 50 tons); loaded in sealed bulk trucks or shipping containers with moisture-proof liners to prevent caking.

• Labeling: Each package is marked with product name, grade, net weight, nutrient content, production date, shelf life (24 months), and safety warnings (e.g., "Keep away from moisture").

5. Production Cycle

The production cycle of ammonium sulfate depends on the production process (main processes: synthetic method from ammonia and sulfuric acid, or by-product recovery from coking plants) and order quantity, with the following standard timelines:

• Small to Medium Orders (1–50 tons): 7–10 working days (including raw material preparation, synthesis, crystallization, drying, packaging, and quality inspection).

• Large Orders (≥ 100 tons): 12–15 working days (needs to adjust production lines and arrange batch production; urgent orders can be prioritized with a 30% surcharge).

• By-Product Recovery Process: 5–8 working days (shorter cycle as it utilizes existing industrial by-products, cost-effective for customers requiring industrial-grade ammonium sulfate).