Ammonium iron(III) sulfate dodecahydrate

grade

ACS reagent

Assay

98.5-102.0% (ACS specification)
99%

form

crystals

reaction suitability

reagent type: catalyst
core: iron

impurities

≤0.01% insolubles
≤0.05% not NH₄OH pptd.

pH

1 (25 °C 482.2 g/L)

mp

39-41 °C (lit.)

anion traces

chloride (Cl^–): ≤0.001%
nitrate (NO₃^–): ≤0.01%

cation traces

Cu: ≤0.003%
Fe²⁺: passes test (limit about 0.001%)
Zn: ≤0.003%

storage temp.

2-8°C

SMILES string

N.O.O.O.O.O.O.O.O.O.O.O.O.[Fe+3].OS([O-])(=O)=O.[O-]S([O-])(=O)=O

InChI

1S/Fe.H3N.2H2O4S.12H2O/c;;2*1-5(2 3)4;;;;;;;;;;;;/h;1H3;2*(H2 1 2 3 4);12*1H2/q+3;;;;;;;;;;;;;;;/p-3

InChI key

LCPUDZUWZDSKMX-UHFFFAOYSA-K