CAS
7783-83-7
Ferric ammonium alum; Iron(III) ammonium sulfate dodecahydrate; Ammonium ferric sulfate; Ammonium iron(III) sulfate; Ammonium iron alum; Ferric alum (double salt)
Ammonium ferric sulphate 12-hydrate is a violet, crystalline double salt of iron (III) known for its strong oxidizing and astringent properties. It is widely used as a reagent in analytical chemistry, particularly in redox titrations because of its excellent stability and well-defined composition.
Beyond laboratory use, it functions as a mordant in textiles and dyeing, a coagulating agent in certain water treatment processes, and an intermediate in the preparation of specialty iron compounds.
Its consistent purity and predictable iron(III) content make it suitable for applications requiring reliable chemical behavior. Selection of product grade and impurity tolerance should be based on the intended end-use, especially for analytical and high-precision processes.
7783-83-7
NH₄Fe(SO₄)₂·12H₂O
482.25 g/mol
Standard oxidizing reagent for titrations.
Used as a mordant for color fixation.
Coagulant in specific clarification processes.
Precursor for iron(III) salts and complexes.
Stable iron(III) source for qualitative and quantitative studies.
LR/AR/ACS
2833 30 00
Odourless
Pale violet solid irregular lumps and/or white fine crystals
~750 kg/m3
38° to 41° C
Store at temp below 30°C. Surface of material turns yellow at 35°C
Starts melting at 38°C. Store away from head, moisture, and oxidizing substances.
GHS07
Pricing depends on grade, purity and packaging. Contact sales for a tailored quote.
Available from Phine Kemikals India and authorised distributors with CoA.
Typically aligned with 25kg or 50kg packs. Bulk on request.
Each batch tested for assay, insolubles, Fe(III) content, heavy metals. CoA included.
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