Ferric sulfate
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Description
Grayish-white powder formed by adding Sulfuric acid to Ferric hydroxide. Ferric sulfate is very Hygroscopic. It is used as a mordant in textile dyeing and as a component in iron gall inks. Ferric sulfate is also used in water purification systems. Ferric sulfate occurs naturally in minerals with varying states of hydration, including lausenite [Fe2(SO4)3-6H2O], Kornelite [Fe2(SO4)3-7H2O], Coquimbite [Fe2(SO4)3-9H2O], and Quenstedtite [Fe2(SO4)3-10H2O].
Synonyms and Related Terms
ferric sulphate (Br.); ferric persulfate; ferric sesquisulfate; ferric tersulfate
Other Properties
Slightly soluble in water and alcohol. Insoluble in organic solvents.
| Composition | Fe2(SO4)3 |
|---|---|
| CAS | 10028-22-5 |
| Melting Point | 480 (d) |
| Density | 2.0-2.1 |
| Molecular Weight | 399.88 |
Hazards and Safety
Non-combustible. Decomposes with light
Sources Checked for Data in Record
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 3963