Potassium iodate

CAS 7758-05-6

Potassium iodate is the more stable alternative to iodide for salt iodisation, preferred in hot and humid climates where iodide would be lost before the salt was eaten.

Where it is and isn’t permitted

Status of Potassium 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 184.1635retrieved 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 potassium hydroxide under oxidising conditions.

  • Vegan
  • Vegetarian
CAS registry number
7758-05-6
InChIKey
JLKDVMWYMMLWTI-UHFFFAOYSA-M
PubChem
CID 23665710

Every name it appears under

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

CAS registry number

  • 7758-05-6

As it appears in regulation

  • Potassium iodate

Other names

  • Caswell No. 693A
  • EPA Pesticide Chemical Code 075703
  • HSDB 1231
  • I139E44NHL
  • IKO3
  • IODIC ACID (HIO3) POTASSIUM SALT (1:1)
  • Iodic acid (HIO3), potassium salt
  • Iodic acid, potassium salt
  • kalium iodate
  • Kaliumjodat
  • KIO3
  • POTASSIUM IODATE
  • Potassium iodate(V) (KIO3)
  • Potassium Iodate, ACS grade
  • Potassium iodine oxide
  • Potassium iodine oxide (KIO3)
  • Potassium triodate
  • Reagecon Potasium Iodate 0.01667M according to Chinese Pharmacopoeia (ChP)

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/potassium-iodate.json