Ferric sulfate
10028-22-5 · 142906-29-4 · 3HWS7HF5XD · 4YKQ1X5E5Y · CCRIS 7885 · Coquimbite mineral · diferric;trisulfate · Diiron tris(sulphate) · Diiron trisulfate · Ferric persulfate · Ferric sesquisulfate · FERRIC SULFATE · Ferric sulfate (USP) · FERRIC SULFATE ANHYDROUS · Ferric sulphate hydrate · Ferric tersulfate · Ferric trisulfate pentahydrate · HSDB 6311 · Iron persulfate · Iron sesquisulfate · Iron sulfate (2:3) · Iron sulfate (Fe2(SO4)3) · Iron sulfate (fe2(so4)3) hydrate · Iron tersulfate · Iron(3+) sulfate · Iron(3+) sulfate (2/3) · Iron(3+) sulfate, (2:3) · iron(3+);trisulfate · Iron(III) sulfate · Iron(III) sulfate (Fe2(SO4)3) · Iron(III) sulfate pentahydrate · iron(III) sulfate(VI) · iron(III)sulphate · Pix 115 · STASIS · Sulfuric acid, iron(3+) salt (3:2) · Viscostat · Ferric sulfateCAS 10028-22-5
Ferric sulfate is an iron source and processing aid used in some fortified foods and in water treatment.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| United States | Permitted | 21 CFR 184.1307retrieved 2026-09-07 | |
| Codex Alimentarius | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. |
What it is made from
Produced by oxidising ferrous sulfate or dissolving iron oxide in sulfuric acid.
- Vegan
- Vegetarian
- CAS registry number
- 10028-22-5
- InChIKey
- RUTXIHLAWFEWGM-UHFFFAOYSA-H
- PubChem
- CID 24826
Every name it appears under
38 recorded names. A label may use any of them.
CAS registry number
- 10028-22-5
- 142906-29-4
As it appears in regulation
- Ferric sulfate
Other names
- 3HWS7HF5XD
- 4YKQ1X5E5Y
- CCRIS 7885
- Coquimbite mineral
- diferric;trisulfate
- Diiron tris(sulphate)
- Diiron trisulfate
- Ferric persulfate
- Ferric sesquisulfate
- FERRIC SULFATE
- Ferric sulfate (USP)
- FERRIC SULFATE ANHYDROUS
- Ferric sulphate hydrate
- Ferric tersulfate
- Ferric trisulfate pentahydrate
- HSDB 6311
- Iron persulfate
- Iron sesquisulfate
- Iron sulfate (2:3)
- Iron sulfate (Fe2(SO4)3)
- Iron sulfate (fe2(so4)3) hydrate
- Iron tersulfate
- Iron(3+) sulfate
- Iron(3+) sulfate (2/3)
- Iron(3+) sulfate, (2:3)
- iron(3+);trisulfate
- Iron(III) sulfate
- Iron(III) sulfate (Fe2(SO4)3)
- Iron(III) sulfate pentahydrate
- iron(III) sulfate(VI)
- iron(III)sulphate
- Pix 115
- STASIS
- Sulfuric acid, iron(3+) salt (3:2)
- Viscostat
Hazard reference values
No reference value for this substance in the sources we hold.
Evidence and how bodies read it
Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.
Sources for this page
- ecfr retrieved 2026-09-07
Full licence terms and publisher details on Sources. How this page is built and updated: Method.
Machine-readable:/api/v1/additives/ferric-sulfate.json