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Aluminium potassium sulfate dodecahydrate, for analysis, ExpertQ®, ACS, Reag. Ph Eur

- Synonyms: Potassium aluminium sulfate, Alum potassium, Potassium alum
- KAl(SO4)2·12H2O
- M = 474,39 g/mol
- CAS [7784-24-9]
- EINECS-No.: 233-141-3
- Solub. in water: (20 ºC): 139 g/l
- Melting point: 90 ºC
- Tariff number: 2833 30 00 00
- Applications: analytical chemistry, manufacture of dyes, manufacturing of lacquers, in explosive compositions.
- Appearance: Blanco y Cristalino

SPECIFICATIONS
assay (complexometric): 99,0 - 100,5 %
identity (IR-spectrum): passes test
appearance of solution: clear and colourless
insoluble in water: max. 0,005 %
pH (10 %, H2O): 3,0 - 3,5
chlorides (Cl): max. 5 ppm
ammonium (NH4): max. 0,005 %
cadmium (Cd): max. 5 ppm
copper (Cu): max. 5 ppm
heavy metals (as Pb): max. 0,001 %
iron (Fe): max. 5 ppm
lead (Pb): max. 5 ppm
sodium (Na): max. 0,005 %