Aluminium Potassium Sulphate 99.5% ACS Letterbox Friendly Pouch




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.

  • 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 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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The Duty is ascertained by your national customs authority based on the HS Code of each product. The HS Code is shown in the “European Shipment” section of each product page.


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