Sulfate of potash,SOP, Potassium Sulphate

Physical and chemical Properties

CAS number 7778-80-5

Chemical formula K2O4S

Molar mass 174.26 g·mol−1

Appearance Colorless or white crystals[1]

Density 2.66 g/cm3, anhydrous

Melting point 1069℃ (1342 K)

Boiling point 1689℃ (1962 K)

Solubility (water) 11.1 g/100 ml (20℃)


Potassium Sulphate  Use:
1) Photographic industry as a photographic fixative.
2) The paper industry for pulp bleaching agent after dechlorination.
3) Bleached cotton printing and dyeing industry as a dechlorination agent.
4) In medicine as a detergent, disinfectant, a laxative.
5) The food industry used as chelating agents, antioxidants.