Sorbitan tristearate
26658-19-5 · 1,4-Anhydro-3,5,6-tri-O-octadecanoyl-D-glucitol · Anhydrosorbitol tristearate · E 492 · FCM no 651 · IJCWFDPJFXGQBN-RYNSOKOISA-N · INS NO.492 · INS-492 · Sorbitan tristearate · Sorbitan, trioctadecanoate · Span 65 · Tristearate de sorbitan · E492 · 492 · [(2R)-2-[(2R,3R,4S)-4-hydroxy-3-octadecanoyloxyoxolan-2-yl]-2-octadecanoyloxyethyl] octadecanoate · [(2R,3S,4R)-2-[1,2-di(octadecanoyloxy)ethyl]-4-hydroxyoxolan-3-yl] octadecanoateE number E492INS 492CAS 26658-19-5
Used as an emulsifier — Codex also lists it as stabilizer.
Sorbitan tristearate is used chiefly in chocolate and confectionery coatings, where it slows the fat bloom that turns chocolate grey.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| United States | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. | ||
| Codex Alimentarius | Permitted, with conditions | 53 food categories highest permitted level 20,000 mg/kg Show every food category
| CXS 192-1995 Table One, INS 492and 52 further provisionsretrieved 2026-09-07 |
What it is made from
Made by esterifying sorbitol with three stearic acid chains. The stearic acid may be of plant or animal 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
- 26658-19-5
- InChIKey
- IJCWFDPJFXGQBN-RYNSOKOISA-N
- PubChem
- CID 15181202
Every name it appears under
16 recorded names. A label may use any of them.
E number
- E492
INS number
- 492
CAS registry number
- 26658-19-5
Other names
- 1,4-Anhydro-3,5,6-tri-O-octadecanoyl-D-glucitol
- Anhydrosorbitol tristearate
- E 492
- FCM no 651
- IJCWFDPJFXGQBN-RYNSOKOISA-N
- INS NO.492
- INS-492
- Sorbitan tristearate
- Sorbitan, trioctadecanoate
- Span 65
- Tristearate de sorbitan
Systematic names
- [(2R)-2-[(2R,3R,4S)-4-hydroxy-3-octadecanoyloxyoxolan-2-yl]-2-octadecanoyloxyethyl] octadecanoate
- [(2R,3S,4R)-2-[1,2-di(octadecanoyloxy)ethyl]-4-hydroxyoxolan-3-yl] octadecanoate
Hazard reference values
| Type | Value | Population | Assessed by | Opinion |
|---|---|---|---|---|
| ADI | 10 mg/kg bw/day | consumers | EFSA ANS | 2017 |
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/sorbitan-tristearate.json