murphyCeteth-2
molecular structure · PubChem
AKA: 9004-95-9, Cetocire, CETOMACROGOL, Romopal O, Collone AC, Lubrol W, Nikkol BC, Ethosperse CL20, Lipocol C2, Ceteth 2
Synthetic
Cleanser
Emulsifier
Clean
OriginDerived from cetyl alcohol and ethylene oxide, both petroleum-derived chemical compounds. Synthesized through ethoxylation, where ethylene oxide chains are added to cetyl alcohol via catalytic reaction.
Poly(oxy-1,2-ethanediyl), .alpha.-hexadecyl-.omega.-hydroxy- (2 mol EO average molar ratio)
Formula
C56H114O21
Mol. Weight
1123.50
CAS #
9004-95-9
Form
Liquid
State
White solid; mp = 32-34 deg C; [Sigma-Aldrich MSDS]
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Emulsifying
Strengthens Barrier
Mixes oil and water
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
Restricted By
CIR Safety Findings
Mixed Eye Irritation Results
2 studies / 1 irritating / 1 not irritating (CIR 36 and 581)
Mixed Skin Irritation Results
5 studies / 4 irritating / 1 not irritating / reactions minimal to moderate (CIR 36 and 581)
Concentration Guide
Leave-on0.5–4%
Rinse-off0.2–3%
0%50%100%
CIR reported use · 2010 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR