murphyPPG-9-Steareth-3
molecular structure · PubChem
AKA: 2-methyloxirane;1-octadecoxyoctadecane;oxirane, QNYWMNCOJRYQJB-UHFFFAOYSA-N
Plant-Derived
Emollient
Skin Conditioner
Not Clean
OriginDerived from coconut or palm kernel oils containing fatty alcohols and stearic acid esters. Synthesized through ethoxylation and esterification of stearyl alcohol with polyethylene glycol.
Oxirane, methyl-, polymer with oxirane, monooctadecyl ether
Formula
C41H84O3
Mol. Weight
625.10
CAS #
9038-43-1
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2016
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR