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Aluminium potassium sulfate dodecahydrate, Pharmpur®, Ph Eur, BP, USP

- Synonyms: Potassium aluminium sulfate, Alum potassium, Potassium alumr- KAl(SO4)2·12H2Or- M = 474,39 g/molr- CAS [7784-24-9]r- EINECS-No.: 233-141-3r- Solub. in water: (20 ºC): 139 g/lr- Melting point: 90 ºCr- Tariff number: 2833 30 00 00r- Applications: analytical chemistry, manufacture of dyes, manufacturing of lacquers, in explosive compositions.r- Appearance: Blanco y CristalinorrSPECIFICATIONSrassay (complexometric): 99,0 - 100,5 %rassay (complexometric, referred to dried basis): 99,0 - 100,5 %rIdentification sulfates: passes testrIdentification aluminium: passes testrIdentification potassium: passes testridentification A (USP): passes testrIdentification B (USP): passes testrIdentification C (USP): passes testrappearance of solution: clear and colourlessrpH (10 %, H2O): 3,0 - 3,5 rammonium (NH4): max. 0,2 %riron (Fe): max. 100 ppm: riron (Fe): passes testrloss on drying : 43,0 % - 46,0 %r