Esters Available — Bulk Only

Polyglyceryl-3 Diisostearate

CAS 66082-42-6 · Formula C45H88O9 · MW 773.2 g/mol

A branched-chain polyglycerol ester that emulsifies oil phases while contributing emollient slip. It is used as an emulsifier and emollient in cosmetic and personal-care formulations.

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CAS Number
66082-42-6
Formula
C45H88O9
Molecular Weight
773.2 g/mol
Material Family
Esters
At a Glance
Material Family
Esters
Record Type
UVCB
Primary Role
Surfactancy · Viscosity Modification
Functional Roles
TRIISOSTEARIN
SKIN CONDITIONINGVISCOSITY CONTROLLING
Applications & Use Cases
  • Emulsification: Water-in-oil and oil-in-water emulsifier for cosmetic systems.
  • Emollient: Contributes slip and skin feel in formulations.
  • Pigment wetting: Aids dispersion and wetting of pigments.
  • Nonionic system: Ethoxylate-free emulsification.
Physical Properties
Physical Form
Viscous liquid (typical)
Appearance
Clear to pale yellow liquid (typical)
HLB Value
~5, low-HLB W/O emulsifier (typical)
Water Solubility
Insoluble in water; oil-soluble / oil-dispersible (typical)
Ionic Character
Nonionic
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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Chemical Identity
CAS Number
66082-42-6
Molecular Formula
C45H88O9
Molecular Weight
773.2 g/mol
IUPAC Name
[2-hydroxy-3-[2-hydroxy-3-[2-hydroxy-3-(16-methylheptadecanoyloxy)propoxy]propoxy]propyl] 16-methylheptadecanoate
INCI Name
TRIISOSTEARIN
PubChem CID
InChI Key
KJYGRYJZFWOECQ-UHFFFAOYSA-N
Synonyms & Trade Names
Triglycerol diisostearate Triglyceryl diisostearate Polyglycerol-3 diisostearate Isostearic acid diester of triglycerol Diisostearic acid, triglycerol ester 16-Methylheptadecanoic acid, triglycerol diester
Full Description

Polyglyceryl-3 diisostearate (CAS 26942-95-0) is a nonionic polyglycerol ester of isostearic acid. It is used as an emulsifier and emollient in cosmetic and personal-care formulations.

Frequently Asked Questions

What is polyglyceryl-3 diisostearate used for?

Polyglyceryl-3 diisostearate (CAS 26942-95-0) is a nonionic polyglycerol ester used as an emulsifier (water-in-oil and oil-in-water) and emollient in cosmetic formulations. It also aids pigment wetting and dispersion in ethoxylate-free systems.

What is the common name for polyglyceryl-3 diisostearate?

It is the triglycerol diester of isostearic acid, identified by INCI name Polyglyceryl-3 Diisostearate and CAS 26942-95-0, formula C57H110O6.

What is polyglyceryl-3 diisostearate made from?

It is formed by esterifying isostearic acid with triglycerol (polyglycerol-3), a polyglycerol-based nonionic chemistry.

How does polyglyceryl-3 diisostearate differ from polyglyceryl-2 diisostearate?

Both are diisostearate esters but on different polyglycerol backbones (triglycerol vs diglycerol), which shifts HLB and emulsion behavior. Specify the polyglyceryl number when ordering.

What grades and packaging is polyglyceryl-3 diisostearate available in?

Grade and packaging depend on current stock. Contact RawSource with your specification and volume for a bulk quote; CoA and SDS accompany each lot.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.