Glyceryl tristearate

CAS 555-43-1

Glyceryl tristearate is a crystallisation modifier and anticaking agent, used to control how fats set.

Where it is and isn’t permitted

Status of Glyceryl tristearate by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted, with conditions21 CFR 172.811retrieved 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

Made by reacting stearic acid with glycerol. Both may be plant or animal in origin.

  • Vegan status depends on the source
  • Vegetarian status depends on the source
  • May raise a halal question
  • May raise a kosher question

This is not an omission. What this additive is made from is not fixed — depending on the manufacturer it may be plant, animal or microbial in origin, nobody is required to say which, and the same product can change source between production runs. Ask the manufacturer if it matters to you; a label cannot answer it.

CAS registry number
555-43-1
InChIKey
DCXXMTOCNZCJGO-UHFFFAOYSA-N
PubChem
CID 11146

Every name it appears under

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

CAS registry number

  • 555-43-1

As it appears in regulation

  • Glyceryl tristearate

Other names

  • 1,2,3-Propanetriol trioctadecanoate
  • 1,2,3-Propanetriyl trioctadecanoate
  • 1,2,3-trioctadecanoyl-glycerol
  • 1,2,3-trioctadecanoyl-sn-glycerol
  • 1,2,3-Trioctadecanoylglycerol
  • 1-stearoyl-2-stearoyl-3-stearoyl-glycerol
  • 2,3-Bis(stearoyloxy)propyl stearate
  • 2,3-Bis(stearoyloxy)propyl stearate #
  • 2,3-di(octadecanoyloxy)propyl octadecanoate
  • beta-1,2,3-tri-octadecanoyl-glycerol
  • beta-tristearin (SSS)
  • Dynasan 118
  • Glycerol tristearate
  • Glycerol, trioctadecanoate
  • Glyceryl tristearate
  • Glyceryl tristearate (NF)
  • Glyceryl tristearate, >=99%
  • Glyceryl tristearate, technical
  • HSDB 5690
  • Kemester 6000 (Salt/Mix)
  • Octadecanoic acid, 1,1',1''-(1,2,3-propanetriyl) ester
  • Octadecanoic acid, 1,2,3-propanetriyl ester
  • propane-1,2,3-triyl trioctadecanoate
  • Propane-1,2,3-triyl tristearate
  • Propane-1,2,3-triyltristearate
  • Spezialfett 118
  • Stearic acid triglyceride
  • Stearic acid triglycerin ester
  • Stearic triglyceride
  • Stearin, tri-
  • Stearoyl triglyceride
  • triacylglycerol
  • Trioctadecanoin
  • trioctadecanoylglycerol
  • Tristealin
  • TRISTEARIN
  • Tristearin (Standard)
  • Tristearin CRS
  • Tristearin, European Pharmacopoeia (EP) Reference Standard
  • TRISTEAROYLGLYCEROL

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/glyceryl-tristearate.json