Zinc sulfate

Zinc sulfate is a zinc fortificant, the most soluble and cheapest of the common zinc sources.

Where it is and isn’t permitted

Status of Zinc sulfate by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted21 CFR 182.8997retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

What it is made from

Produced by dissolving zinc or zinc oxide in sulfuric acid.

  • Vegan
  • Vegetarian
InChIKey
NWONKYPBYAMBJT-UHFFFAOYSA-L
PubChem
CID 24424

Every name it appears under

44 recorded names. A label may use any of them.

CAS registry number

  • 7733-02-0

As it appears in regulation

  • Zinc sulfate

Other names

  • Bonazen
  • Bufopto zinc sulfate
  • Caswell No. 927
  • CCRIS 3664
  • Chinese Pharmacopoeia 0.05M Zinc Sulphate
  • component of Phenylzin
  • EPA Pesticide Chemical Code 089001
  • HSDB 1063
  • Medizinc
  • Neozin
  • O4SZn
  • OP-Thal-zin
  • Optised
  • Optraex
  • Orazinc
  • Prefrin-Z
  • Reagecon Zinc Sulphate 0.1M according to United States Pharmacopoeia (USP)
  • Salvazinc
  • Solfato di Zinco
  • Solvezinc
  • Solvezink
  • Sootheye
  • Sulfate de zinc
  • Sulfate, Zinc
  • Sulfato de cinc
  • Sulfato de zinco
  • Sulfuric acid zinc salt (VAN)
  • Sulfuric acid, zinc salt
  • Sulfuric acid, zinc salt (1:1)
  • USP Solution Zinc Sulfate 0.0500 Molar Conforms to USP
  • Verazinc
  • Visine-ac
  • White copperas
  • White vitriol
  • White vitriol (VAN)
  • Z Span
  • Zindole
  • Zink-Gro
  • Zinklet
  • Zinkosite
  • Zn sulf co
  • ZnSO4

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/zinc-sulfate.json