Disodium Lauryl Phosphate
AKA “50957-96-5, DTXSID10885426, RefChem:862596, DTXCID501024806, PHOSPHORIC ACID, DODECYL ESTER, SODIUM SALT, Monosodium monolauryl phosphate, 17026-83-4, Sodium Monododecyl Phosphate (contains, Monosodium dodecyl phosphate, sodium;dodecyl hydrogen phosphate
Surfactant
Ingredient Facts
Disodium lauryl phosphate
AKA: 50957-96-5, DTXSID10885426, RefChem:862596, DTXCID501024806, PHOSPHORIC ACID, DODECYL ESTER, SODIUM SALT, Monosodium monolauryl phosphate, 17026-83-4, Sodium Monododecyl Phosphate (contains, Monosodium dodecyl phosphate, Sodium;dodecyl hydrogen phosphate
Surfactant · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Not Clean
Phosphoric acid, dodecyl ester, sodium salt
Effective at 4.42%
Formula
C12H26NaO4P
Mol. Weight
288.30
CAS #
50957-96-5
Form
Powder
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.
Cleansing Surfactant
Emulsifier
Antioxidant Protection
Removes Impurities
Mixes Oil & Water
Traditional Use
Developed as a mild phosphate ester surfactant in mid-to-late 20th century cosmetics. Designed as a gentler alternative to traditional sulfate-based surfactants.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.14%
8.7%
0%12%
Effective Range
CIR reported use: 0.14-2 | 0.25-8.7
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Effects of Sodium Salts of Fatty Acids and Their Derivatives on Skin Permeation of Cromolyn Sodium.
Akinbote OE, Verana G, Dandekar AA, Tijani AO, Mishra D et al.
AAPS PharmSciTech, 2023
Effects of Sodium Salts of Fatty Acids and Their Derivatives on Skin Permeation of Cromolyn Sodium.
Akinbote OE, Verana G, Dandekar AA, Tijani AO, Mishra D et al.
AAPS PharmSciTech, 2023
Safety Assessment of Phosphoric Acid and Its Salts as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Disodium Lauryl Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Metaphosphoric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
Phosphoric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
Phosphoric Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
SODIUM SALT
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR