Ferric Ammonium Sulfate Dodecahydrate, Reagent A.C.S.

Appearance: 
Pale violet crystals
Assay:98.5-102.0%
NH4Fe(SO4)2 · 12(H2O)
MAXIMUM ALLOWABLE 
Insoluble matter: 0.01%
Chloride (Cl): 0.001%
Nitrate (NO3): 0.01%
Copper (Cu): 0.003%
Zinc (Zn): 0.003%
Ferrous iron (Fe++): Passes test
Substances not precipitated by ammonium hydroxide: 0.05%
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