Potassium propionate

E number E283INS 283CAS 327-62-8

Used as a preservative.

Potassium propionate is a mould inhibitor used in baked goods where sodium is being reduced.

Where it is and isn’t permitted

Status of Potassium propionate by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationNot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.
Codex AlimentariusCodex Alimentarius Commission / JECFAPermitted

no numerical limit (good manufacturing practice)

CXS 192-1995 Table Three, INS 283retrieved 2026-09-07

What it is made from

Made by neutralising propionic acid with potassium.

  • Vegan
  • Vegetarian
CAS registry number
327-62-8
InChIKey
BWILYWWHXDGKQA-UHFFFAOYSA-M
PubChem
CID 23663619

Every name it appears under

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

E number

  • E283

CAS registry number

  • 327-62-8

Other names

  • 7H1F04CKTX
  • E 283
  • INS NO. 283
  • INS-283
  • Potassium propanoate
  • Potassium propionate
  • Potassium propionate, AldrichCPR
  • Propanoic acid, potassium salt
  • Propionic Acid Potassium Salt
  • PROPIONICACIDPOTASSIUMSALT

Systematic names

  • potassium;propanoate

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

  • gsfa 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-propionate.json