Ferrous ammonium sulfate
Pale green-blue crystals that slowly oxidize and effloresce in the presence of light and air. Known as Mohr's salt, ferrous ammonium sulfate is used as a primary standard in quantitative analysis. It is also used in photographic solutions and in dosimeter badges.
Synonyms and Related Terms
Mohr's salt; ammonium ferrous sulfate; iron ammonium sulfate; ferrous ammonium sulphate (Br.); ammonium iron (II) sulfate
Soluble in water. Insoluble in ethanol. Deliquesces in air.
|Melting Point||100-110 (d)|
|Molecular Weight||mol. wt. = 392.13|
Hazards and Safety
Contact may cause irritation. May decompose in light.
Mallinckrodt Baker: MSDS
Sources Checked for Data in Record
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985