Potassium iodide
7681-11-0 · Antistrumin · Asmofug E · Bestmade Natural Products Kali Iodatum · Bestmade Natural Products Potassium Iodide (Kali Iod) · Caswell No. 694 · CCRIS 8168 · Dipotassium diiodide · EPA Pesticide Chemical Code 075701 · Gold etchant, standard · HSDB 5040 · Iodide, Potassium · Iodine (as potassium iodide) · Iodine (as potassium) · Iodure de potassium · Iosat · Jodetten depot · Jodid ratiopharm · Joptone · Kali iodatum · Kali Iodatum 1X · Kali iodide · Kalii iodidum · Kalium iodatum · Kaliumiodid · Kaliumjodid · Kisol · Knollide · Mono Jod · Pima · Pot iodide ammoniat · potasium iodide · Potassium diiodide · potassium iodid · Potassium iodide · Potassium iodide (K(I2)) · Potassium iodide (K2I2) · Potassium iodide (K3I3) · Potassium iodide (KI) · Potassium iodide ,meet Ch.P · Potassium iodide ACS grade · Potassium Iodide Oral Solution · Potassium Iodide Tablet · Potassium iodide, 99.5% · Potassium iodide, ultra dry · Potassium monoiodide · Potassium salt of hydriodic acid · potassiumiodide · Potide · Radiban · SSKI · Thyro Block · Thyro-Block · Thyroblock · Thyroblock (TN) · Thyroprotect · Thyrosafe · Thyroshield · Tripotassium triiodide · WLN: KA I · Potassium;iodide · Potassium iodideCAS 7681-11-0
Potassium iodide is the additive behind iodised salt, one of the most effective public-health measures ever taken with a food additive. Iodine deficiency was the leading preventable cause of intellectual disability before salt iodisation.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| United States | Permitted, with conditions | 21 CFR 172.375and 1 further provisionretrieved 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 reacting iodine with potassium hydroxide. It oxidises and is slowly lost from salt in warm, humid conditions, which is why iodate is preferred in some climates.
- Vegan
- Vegetarian
- CAS registry number
- 7681-11-0
- InChIKey
- NLKNQRATVPKPDG-UHFFFAOYSA-M
- PubChem
- CID 4875
Every name it appears under
62 recorded names. A label may use any of them.
CAS registry number
- 7681-11-0
As it appears in regulation
- Potassium iodide
Other names
- Antistrumin
- Asmofug E
- Bestmade Natural Products Kali Iodatum
- Bestmade Natural Products Potassium Iodide (Kali Iod)
- Caswell No. 694
- CCRIS 8168
- Dipotassium diiodide
- EPA Pesticide Chemical Code 075701
- Gold etchant, standard
- HSDB 5040
- Iodide, Potassium
- Iodine (as potassium iodide)
- Iodine (as potassium)
- Iodure de potassium
- Iosat
- Jodetten depot
- Jodid ratiopharm
- Joptone
- Kali iodatum
- Kali Iodatum 1X
- Kali iodide
- Kalii iodidum
- Kalium iodatum
- Kaliumiodid
- Kaliumjodid
- Kisol
- Knollide
- Mono Jod
- Pima
- Pot iodide ammoniat
- potasium iodide
- Potassium diiodide
- potassium iodid
- Potassium iodide
- Potassium iodide (K(I2))
- Potassium iodide (K2I2)
- Potassium iodide (K3I3)
- Potassium iodide (KI)
- Potassium iodide ,meet Ch.P
- Potassium iodide ACS grade
- Potassium Iodide Oral Solution
- Potassium Iodide Tablet
- Potassium iodide, 99.5%
- Potassium iodide, ultra dry
- Potassium monoiodide
- Potassium salt of hydriodic acid
- potassiumiodide
- Potide
- Radiban
- SSKI
- Thyro Block
- Thyro-Block
- Thyroblock
- Thyroblock (TN)
- Thyroprotect
- Thyrosafe
- Thyroshield
- Tripotassium triiodide
- WLN: KA I
Systematic names
- Potassium;iodide
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-iodide.json