Potassium alum, potash alum or tawas is the potassium double sulfate of aluminium.
It is commonly found in its dodecahydrate form as KAl(SO4)2·12(H2O).
Alum is the common name for this chemical compound, given the nomenclature of potassium aluminum sulfate dodecahydrate.
It is commonly used in water purification, leather tanning, dyeing, fireproof textiles, and baking powder.
It also has cosmetic uses as a deodorant, as an aftershave treatment and as a styptic for minor bleeding from shaving.
Minimum Assay: >99.5%
Molecular Formula: AlK(S04)2.12H20
Molecular Weight: 474.38 g/mol
Melting Point: 92 C
Hazard Phrases: Not considered harmful under normal laboratory conditions
Cas No: 7784-24-9
Einecs No: 233-141-3
HS CODE: 2833300000
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