Ammonium Sulphate is a salt formed by reaction between Ammonia and Sulphuric Acid. It occurs as white to beige crystals or granules. The bulk density is between 0.8 and 1.1. It is soluble in water and insoluble in alcohol. It decomposes by heating to 235°C. In contact with alkalis, it gives off ammonia.
IDENTIFICATION AND PROPERTIES
Name: Ammonium Sulphate
Chemical formula: (NH4)2SO4
CAS: 7783-20-2
EC: 231-984-1
- Shape: Crystalline
- Colour: White
- Odour: Odourless
- pH: approx 5 (100g/l, 20ºC)
- Melting point (decomposition): approx. 350°C The substance / product decomposes
- Flammability: Non-flammable
- Vapour pressure: 0,0000001 hPa
- Density: 1,766 g/cm3 (20ºC)
- Relative density: 1.77 (25ºC, 1,013 hPa)
- Solubility in water 764 g/l (20ºC)
USES
Its main use is as a fertiliser. It is a powdered component of fire extinguishers and flame retardants. It is used for many applications in the chemical, wood pulp, textile and pharmaceutical industries. It is also used in the production of cosmetics and paints.
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