Aluminium Potassium Sulphate Dodecahydrate 99% AR | AlK(SO4)2.12H2O

Conforms to BP, Ph Eur, USP

Synonym ; Alum, Potassium alum, Potassium aluminum sulfate dodecahydrate

Purity : Min 99%

CAS No. : 7784-24-9

Molecular Formula : AlK(SO4)2.12H2O

Molecular Weight : 474.38

H.S.Code : 2833.30300

Shelf Life : 60 Months

Physical Properties

Physical state at 20 C : Solid

Colour : White crystalline

Odour : Odorless

pH value : 3.3

Melting point/ Freezing point [C] : 92 C

Boiling point [C] : 200C

Density [g/cm3] : 1.757

Solubility in water [% weight] : 14% in water

Specification

Appearance : White crystalline powder

Assay (complexometric) : 99.0-100.5%

Identification : To comply USP, BP test

Appearance of solution : Passes test

Insoluble matter : Max 0.005%

pH (10% solution in water) : 3.0 -.3.5

Chloride (Cl) : Max 0.0005%

Ammonium (NH4) : Max 0.005%

Arsenic (As) : Max 0.0002%

Copper (Cu) : Max 0.0005%

Iron (Fe) : Max 0.0005%

Heavy metal (as Pb) : Max 0.001%

Sodium (Na) : Max 0.02%

Loss on dryig (at 400C) : 43 - 46%

Note :

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Alumunium Potassium Sulphate Dodecahydrate 99% AR | AlK(SO4)2.12H2O

Alumunium Potassium Sulphate Dodecahydrate 99% AR | AlK(SO4)2.12H2O

Rp 784.000

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