硫酸铵ammonium sulphate
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Ammonium Sulphate
CAS No.:7783-20-2
Molecular Formula: (NH4)2SO4 Molecular Weight:132.14
Structural Formula:
Properties:
Ammonium Sulphate has PH value is 5.5 in 0.1M solution. Density 1.769 g/cm3 (20°C). Ammonium Sulphate is hygroscopic; soluble in water; insoluble in acetone, alcohol and ether. Main active ingredients are 21% nitrogen and 24% sulfur, so it can be described as NPK 21-0-0 24S. Generally, it is a by-product from chemical (cyanuric acid, capro, acrylonitrile, sodium cyanide, monosodium glutamate-MSG, methyl methacrylate-MMA, etc.) or steel plant. Steel Grade (also call Coke-ovens Grade) is fine white powder. After processing it can be white granular or flake. Caprolactam Grade is colorless (achromatic) crystalline or yellowish crystals.