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Aluminium Potassium Sulphate 99.5% ACS

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Aluminium Potassium Sulphate 99.5% ACS

Potassium alum, potash alum or tawas is the potassium double sulfate of aluminium.

It is commonly found in its dodecahydrate form as KAl(SO4)2ยท12(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.



  • as a mordant in hand dyeing
  • making crystals
  • is an astringent/styptic and antiseptic
  • a natural deodorant by inhibiting the growth of the bacteria responsible for body odor
  • General Laboratory Reagent

Minimum Assay: >99.5%
Molecular Formula: AlK(S04)2.12H20
Molecular Weight: 474.38 g/mol
Melting Point: 92 C
Water: <4.5%
Chloride: <0.01%
Iron: <100ppm
Aluminium: 5-6%





Hazard Phrazes: Not considered harmful under normal laboratory conditions

Cas No: 7784-24-9
Einecs No: 233-141-3
Aluminium Potassium Sulphate 99.5% ACS
Code Pack Price Qty  
GPC8011-2X 250g £2.95
GPC8011-5X 500g £3.95
GPC8011-Y 1Kg £6.95
GPC8011-5Y 5Kg £29.75