AKA: Phoslex A 18D, Nostaphat KO 300N, Oleyl alcohol phosphate, 9-Octadecen-1-ol, (9Z)-, 37310-83-1, 0LI104WP6Z, EINECS 253-455-4, (Z)-, EC 253-455-4, RefChem:856566
Surfactant · Cleansing · EWG: 1
Synthetic
Cleanser
Emulsifier
Clean
Phosphoric acid, 9-(Z)-octadecenyl esters (mono- and di-)
Effective at 2.11%
Formula
C18H39O5P
Mol. Weight
366.50
CAS #
37310-83-1
Form
Powder
State
Other Solid; Liquid; Water or Solvent Wet Solid
See origin →
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.
Surfactant Cleansing
Surfactant Emulsifying
Moisturizing
Antimicrobial
Fights Acne
Lifts away dirt and oil
Mixes oil and water
Traditional Use
Developed as a synthetic phosphate ester in the 20th century. Used in cosmetics as an emulsifier and conditioning agent with no traditional use history.