Potassium Alum USP

Test Specification….USP
Characters It occurs as large, colorless crystals, crystalline fragments, or white powder

Test (A)

Test (B)







(a)Specified Test.

(b)Specified Test. A violet color is imparted to the flame.

(c)Specified test. A white, crystalline precipitate is formed within 30 mins.

(d)A solution (1 in 20) responds to the test for aluminium and sulphate.

Solubility Very soluble in boiling water; freely soluble in water and in glycerin; insoluble in alcohol.
Loss on drying Between 43% and 46%
Iron Specified Test. No blue color is produced immediately.
Residual solvents Meets the requirements
Assay Not less than 99% and not more than 100.5% calculated on anhydrous basis

Shelf life, Storage and Packing

It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.


GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.

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