murphyPEG-175 Distearate
molecular structure · PubChem
AKA: 9005-08-7, Ethane-1, 2-diol;heptadecanoic acid, Ethylene glycol;heptadecanoic acid, QYJQHDWGURXGNL-UHFFFAOYSA-N, C19H40O4, Protamate 200-DS(TM), PEG-4 Distearate(TM)
Plant-Derived
Cleanser
Emulsifier
Not Clean
OriginDerived from stearic acid, a saturated fatty acid typically sourced from animal or vegetable fats. Synthesized through esterification of stearic acid with polyethylene glycol (PEG-175) polymer chains.
Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxooctadecyl)-.omega.-[(1-oxooctadecyl)oxy]- (175 mol EO average molar ratio)
Formula
C19H40O4
Mol. Weight
332.50
CAS #
9005-08-7
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Viscosity Controlling
Cleansing Surfactant
Emulsifier
Controls Viscosity
Lifts away dirt and oil
Mixes oil and water
Controls product thickness
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-onNot reported
Rinse-off0.089%
0%50%100%
CIR reported use · 2014 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR