Glycols & Polyols Available — Bulk Only

Polyethylene Glycol Monostearate (PEG-2 Stearate)

CAS 106-11-6 · Formula C22H44O4 · MW 372.6 g/mol

A nonionic stearate ester used to emulsify oil-water systems and lend opacity. It functions as an emulsifier, opacifier, and thickener in cosmetic and industrial formulations.

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CAS Number
106-11-6
Formula
C22H44O4
Molecular Weight
372.6 g/mol
Material Family
Glycols & Polyols
At a Glance
Material Family
Glycols & Polyols
Record Type
Pure compound
Primary Role
Surfactancy · Color / Pigmentation
Functional Roles
PEG-2 STEARATE
OPACIFYINGSURFACTANT - EMULSIFYING
Applications & Use Cases
  • Emulsifier: Nonionic oil-in-water emulsification.
  • Opacifier: Imparts opacity to liquid formulations.
  • Thickener: Builds viscosity and body.
  • Surfactant: Surface-active agent in formulated products.
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
106-11-6
Molecular Formula
C22H44O4
Molecular Weight
372.6 g/mol
IUPAC Name
2-(2-hydroxyethoxy)ethyl octadecanoate
INCI Name
PEG-2 STEARATE
PubChem CID
InChI Key
PWVUXRBUUYZMKM-UHFFFAOYSA-N
Synonyms & Trade Names
Diethylene glycol monostearate PEG-2 Stearate Cerasynt Octadecanoic acid, 2-(2-hydroxyethoxy)ethyl ester Aqua Cera Glyco stearin Cerasynt special Diglycol monostearate Clindrol SDG Emcol ETS Promul 5080 Diethylene glycol stearate Nonex 411 DIGLYCOL STEARATE Atlas G 2146 Emcol CAD Diethylene glycol, monoester with stearic acid Stearic acid, 2-(2-hydroxyethoxy)ethyl ester
Full Description

Polyethylene glycol monostearate (CAS 106-11-6), the diethylene glycol monoester of stearic acid, is a nonionic surfactant. It functions as an emulsifier, opacifier, and thickener in cosmetic and industrial formulations.

Frequently Asked Questions

What is glycol monostearate used for?

Polyethylene glycol monostearate (CAS 106-11-6) is a nonionic surfactant used as an oil-in-water emulsifier, opacifier, and thickener in cosmetic and industrial formulations. It is the diethylene glycol monoester of stearic acid.

Is polyethylene glycol monostearate the same as glyceryl stearate?

No. Polyethylene glycol monostearate is a glycol ester of stearic acid (CAS 106-11-6), whereas glyceryl stearate is the glycerol ester. They have different INCI identities, HLB values, and emulsification behavior; confirm CAS when specifying.

What is the chemical identity of polyethylene glycol monostearate?

It is the diethylene glycol monoester of stearic acid, CAS 106-11-6, molecular formula C22H44O4. Identity is confirmed on the certificate of analysis supplied with each lot.

What grades or packaging is polyethylene glycol monostearate available in?

It is typically supplied as a waxy solid. Available grade and packaging (drums, totes) depend on stock; contact RawSource with your specification and volume for a bulk quote, CoA, and SDS.

How is polyethylene glycol monostearate used as a thickener?

As a nonionic surface-active ester it builds viscosity and body in oil-in-water systems and can impart opacity. It is incorporated into the oil phase and emulsified to set the final texture.

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.