Dicetyl Phosphate

AKA: 2197-63-9, Dihexadecyl phosphate, Dicetylphosphate, Dicetyl hydrogen phosphate, Bis(hexadecyl) phosphate, Di-n-hexadecyl phosphate, 1-Hexadecanol, Hydrogen phosphate, CHEBI:60424
Synthetic
Cleanser
Emulsifier
Clean
OriginSynthesized from fatty alcohols and phosphoric acid or phosphorus pentoxide through chemical reaction. Produced via esterification of dicetyl alcohol with phosphate compounds.
Dihexadecyl hydrogen phosphate
Formula
C32H67O4P
Mol. Weight
546.80
CAS #
2197-63-9
Form
Powder
Skin Types
●all-skin-types
Best For
Dryness
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
Antioxidant Protection
Reduces Inflammation
Locks In Moisture
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 a Skin Irritant
2 studies / 2 not irritating (CIR 671)
Not a Sensitizer
2 studies / 2 not sensitizing (CIR 671)
Eye Irritant in Testing
1 study / 1 irritating / reactions slight (CIR 671)
Concentration Guide
Leave-on0.2–4%
Rinse-off0.038–1%
0%50%100%
CIR reported use · report published 2019
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR