murphyPotassium Cetyl Phosphate
AKA: 84861-79-0, Cetylphosphate potassium salt, 19035-79-1, Potassium hexadecyl hydrogenphosphate, Potassium hexadecyl hydrogen phosphate
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Synthetic
Cleanser
Emulsifier
Clean
OriginDerived from cetyl alcohol and phosphoric acid, both petroleum-derived or synthesized organic compounds. Synthesized through phosphorylation of cetyl alcohol using phosphoric acid or phosphate reagents.
1-hexadecanol, phosphate, potassium salt
Formula
C16H34KO4P
Mol. Weight
360.51
CAS #
84861-79-0, 19035-79-1
Form
Powder
State
Other Solid
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.
Cleansing Surfactant
Emulsifier
Removes Impurities
Mixes Oil & Water
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
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Eye Irritant
1 study / 1 not irritating (CIR 671)
Concentration Guide
Leave-on0.05–8.3%
Rinse-off0.5–1%
0%50%100%
CIR reported use · report published 2019
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR