Ferro(III) ammonio solfato dodecaidrato, EssentQ®

- Synonyms: Iron(III) ammonium sulfate, Alum iron, Ferric ammonium alum, Iron alum
- NH4Fe(SO4)2·12H2O
- M = 482,19 g/mol
- CAS [7783-83-7]
- EINECS-No.: 233-382-4
- Solub. in water: (25 ºC): 1240 g/l
- Melting point: 39 - 41 ºC
- Tariff number: 2833 30 00 00
- Applications: analytical chemistry, laboratory reagent.

SPECIFICATIONS
assay (iodometric): 97,0 - 102,0 %
identity (IR-spectrum): passes test
insoluble in water: max. 0,01 %
chlorides (Cl): max. 0,005 %
calcium (Ca): max. 0,03 %
copper (Cu): max. 0,005 %
iron (II) (Fe (II)): max. 0,002 %
lead (Pb): max. 0,002 %
magnesium (Mg): max. 0,03 %
zinc (Zn): max. 0,005 %