Potassium Dodecylbenzenesulfonate
AKA “27177-77-1, Benzenesulfonic acid, dodecyl-, potassium salt, Dodecylbenzenesulfonic acid, RefChem:867804, Dodecyl benzene sulfonic acid, 889R5VY1ET, DTXSID6029339, potassium;2-dodecylbenzenesulfonate, potassium 2-dodecylbenzenesulfonate
Surfactant
Ingredient Facts
Potassium dodecylbenzenesulfonate
AKA: 27177-77-1, Benzenesulfonic acid, Dodecyl-, Potassium salt, Dodecylbenzenesulfonic acid, RefChem:867804, Dodecyl benzene sulfonic acid, 889R5VY1ET, DTXSID6029339, Potassium;2-dodecylbenzenesulfonate, Potassium 2-dodecylbenzenesulfonate
Surfactant · Cleansing · EWG: 4
Synthetic
Cleanser
Safety Concern
Not Clean
Potassium dodecylbenzenesulphonate
Formula
C18H29KO3S
Mol. Weight
364.60
CAS #
27177-77-1
Form
Liquid
State
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.
Cleansing Surfactant
Removes Impurities
Traditional Use
A synthetic anionic surfactant developed in the mid-20th century as an industrial cleaning agent. Adopted by cosmetics manufacturers in the 1960s-70s for detergent and cleansing formulations.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR