Calcium iodate

CAS 7789-80-2

Calcium iodate is an iodine source for salt iodisation and animal feed, and has also been used as a dough conditioner.

Where it is and isn’t permitted

Status of Calcium iodate 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 184.1206retrieved 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 reacting iodine with calcium hydroxide under oxidising conditions.

  • Vegan
  • Vegetarian
CAS registry number
7789-80-2
InChIKey
UHWJJLGTKIWIJO-UHFFFAOYSA-L
PubChem
CID 24619

Every name it appears under

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

CAS registry number

  • 40563-56-2
  • 7789-80-2

As it appears in regulation

  • Calcium iodate

Other names

  • Autarite
  • CaI2O6
  • Calcium iodate
  • Calcium iodate (Ca(IO3)2)
  • calcium;diiodate
  • HSDB 986
  • Iodic acid (HIO3), calcium salt
  • Iodic acid, calcium salt
  • Lautarite
  • UHWJJLGTKIWIJO-UHFFFAOYSA-L

Systematic names

  • Calcium;diiodate

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/calcium-iodate.json