murphyDimyristyl Phosphate
AKA: 1-Tetradecanol, Hydrogen phosphate, Ditetradecyl hydrogen phosphate, Ditetradecyl phosphate, 6640-03-5, MEXORYL SY, 1-(hydrogen phosphate)
Synthetic
Cleanser
Emulsifier
Not Clean
OriginDerived from myristic acid (a saturated fatty acid) and phosphoric acid or phosphorus compounds. Synthesized through esterification of myristic acid with phosphate reagents under controlled conditions.
Ditetradecyl hydrogen phosphate
Formula
C28H59O4P
Mol. Weight
490.70
CAS #
6640-03-5
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.
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.
Removes Impurities
Cleansing Surfactant
Emulsifier
Mixes Oil & Water
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
CIR Safety Findings
Not a Skin Irritant
2 studies / 2 not irritating (CIR 671)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 671)
Not an Eye Irritant
1 study / 1 not irritating (CIR 671)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2019
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR