Aluminum calcium silicate

Aluminium calcium silicate is an anticaking agent used in table salt and powdered products.

Where it is and isn’t permitted

Status of Aluminum calcium silicate 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 182.2122retrieved 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 synthetically from silicate, aluminium and calcium sources. It contributes dietary aluminium, which regulators assess separately.

  • Vegan
  • Vegetarian
InChIKey
IQDXNHZDRQHKEF-UHFFFAOYSA-N
PubChem
CID 21881395

Every name it appears under

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

CAS registry number

  • 1327-39-5

As it appears in regulation

  • Aluminum calcium silicate

Other names

  • Aluminosilicic acid, calcium salt
  • Aluminum calcium silicate
  • Calcium aluminum silicate
  • Calcium silicoaluminate
  • CCRIS 3933
  • dialuminum;dicalcium;dioxido(oxo)silane
  • IQDXNHZDRQHKEF-UHFFFAOYSA-N
  • Silicic acid, aluminum calcium salt

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/aluminum-calcium-silicate.json