Ammonium Ferric Sulphate AR Dodecahydrate 500 Gram

PRODUCT CODE 457050
SYNONYMS Ammonium iron (III) sulphate, Iron alum
C.I. NO. __
CASR NO. 7783-83-7
ATOMIC OR MOLECULAR FORMULA NH4Fe(SO4)2.12H2O
ATOMIC OR MOLECULAR WEIGHT 482.18
PROPERTIES Melting point -39°C; Lilac to violet, efflorescent
crystals.

PARAMETER LIMIT
Description Pale violet or almost colourless crystals or crystalline powder.
Solubility 10% solution in water is clear.
Minimum assay (Iodometric) 99.0%

MAXIMUM LIMIT OF IMPURITIES
Insoluble matter 0.01%
Chloride (Cl) 0.001%
Calcium (Ca) 0.01%
Copper (Cu) 0.003%
Ferrous iron No reaction
Magnesium (Mg) 0.005%
Zinc (Zn) 0.003%