Sodium aluminosilicate

E number E554INS 554CAS 12003-51-9

Used as an anticaking agent.

Sodium aluminosilicate is an anticaking agent used in powdered products and table salt. It is one of the additives contributing dietary aluminium, which regulators assess separately.

Where it is and isn’t permitted

Status of Sodium aluminosilicate 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 182.2727retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFAPermitted, with conditions

9 food categories

highest permitted level 1,140 mg/kg

Show every food category
  • 01.3.2 Beverage whiteners — 570 mg/kg
  • 01.5.1 Milk powder and cream powder (plain) — 265 mg/kg
  • 01.5.2 Milk and cream powder analogues — 570 mg/kg
  • 01.8.2 Dried whey and whey products, excluding whey cheeses — 1,140 mg/kg
  • 05.3 Chewing gum — 100 mg/kg
  • 12.1.1 Salt — 1,000 mg/kg
  • 12.2.2 Seasonings and condiments — 1,000 mg/kg
  • 12.5.2 Mixes for soups and broths — 570 mg/kg
  • 12.6.3 Mixes for sauces and gravies — 570 mg/kg
CXS 192-1995 Table One, INS 554and 8 further provisionsretrieved 2026-09-07

What it is made from

Produced synthetically by precipitating sodium silicate with an aluminium salt.

  • Vegan
  • Vegetarian
CAS registry number
12003-51-9
InChIKey
OKSRBEMKUSZPOX-UHFFFAOYSA-N
PubChem
CID 61537

Every name it appears under

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

E number

  • E554

INS number

  • 554

CAS registry number

  • 12003-51-9

As it appears in regulation

  • Sodium aluminosilicate

Other names

  • Aluminium sodium orthosilicate (1/1/1)
  • Aluminium sodium silicate
  • Aluminum sodium silicate (1:1:1)
  • E 554
  • OKSRBEMKUSZPOX-UHFFFAOYSA-N
  • Silicic acid (H4SiO4), aluminum sodium salt (1:1:1)
  • Sodium aluminium silicate
  • Sodium aluminium silicate(1:1:1)
  • Sodium aluminosilicate
  • Sodium silicoaluminate

Systematic names

  • Aluminum sodium silicate

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
  • 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/sodium-aluminosilicate.json