Compound Q&A

What is Ammonium Iron(II) Sulfate Hexahydrate (CAS: 7783-85-9)?

Answer

Ammonium Iron(II) Sulfate Hexahydrate (Mohr’s Salt)
Ammonium Iron(II) Sulfate Hexahydrate, also known as Mohr’s Salt, is a crystalline double salt with the chemical formula (NH4)2Fe(SO4)2·6H2O. It is commonly used as a stable source of ferrous ions (Fe²⁺) in chemical reactions. The compound is blue-green in color, highly soluble in water, and contains six water molecules per formula unit. CAS 7783-85-9 identifies this specific hydrate form.

About

CAS No 7783-85-9
English Name Ammonium Iron(II) Sulfate Hexahydrate (Mohr’s Salt)
Molecular Formula FeH6NO5S
Molecular Weight 187.96 g/mol
EINECS 616-518-0
SMILES [O-]S(=O)(=O)[O-].O.[Fe+].[NH4+]
InChIKey MQLVWQSVRZVNIP-UHFFFAOYSA-L
Last Updated: 2025-08-28 11:52

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