Nonoxynol-3
AKA “ammonium 2-(4-nonylphenoxy)ethyl sulfate, 31691-97-1, azanium;2-(4-nonylphenoxy)ethyl sulfate, NS00013362”
Ingredient
Ingredient Facts
Nonoxynol-3
AKA: Ammonium 2-(4-nonylphenoxy)ethyl sulfate, 31691-97-1, Azanium;2-(4-nonylphenoxy)ethyl sulfate, NS00013362
Ingredient · Cleansing · EWG: 4
Synthetic
Cleanser
Not Clean
Polyethylene Glycol (30) Nonyl Phenyl Ether Sulfate, Ammonium Salt
Formula
C17H31NO5S
Mol. Weight
361.50
CAS #
31691-97-1
Form
Liquid
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.
Removes Impurities
Traditional Use
A synthetic non-ionic surfactant developed in the mid-20th century. Used in cosmetics as an emulsifier and solubilizer.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR