Molecular formula: (NH₄)₂SO₄
Properties: White or light-colored crystals, easily soluble in water, insoluble in ethanol and acetone; hygroscopic, solidifies into lumps after moisture absorption.
Main uses: Used in chemical fertilizers, manufacturing compound fertilizers, potassium sulfate, ammonium chloride, ammonium persulfate, etc.; also has certain applications in the food, textile, leather, and pharmaceutical industries.
Product standard: GB/535-1995
Packaging: Plastic bags (with inner polyethylene film bags); 25KG; 50KG
Quality standards: Appearance White crystals, no visible impurities
Nitrogen (N) content 21.0% min
Moisture 0.2% max
Free acid content 0.03% max
Iron content 0.007% max
Arsenic content 0.00005% max
Heavy metal content 0.005% max
Water-insoluble matter content 0.01% max