Sodium Tridecyl Sulfate
AKA “Tridecyl sodium sulfate, Sodium tridecyl sulphate, 1-Tridecanol, hydrogen sulfate, sodium salt, UNII-JT30S80YR4, RHODAPON TDS, HSDB 5912
Synthetic
Ingredient Facts
Sodium tridecyl sulfate
AKA: Tridecyl sodium sulfate, Sodium tridecyl sulphate, 1-Tridecanol, Hydrogen sulfate, Sodium salt, UNII-JT30S80YR4, RHODAPON TDS, HSDB 5912
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Synthetic
Clean
A gentle cleansing agent that removes dirt and oil while creating a light, airy lather. Helps blend water and oil-based ingredients for smooth product texture.
Formula
C13H27NaO4S
Mol. Weight
302.41
CAS #
3026-63-9
Form
Powder
State
White powder; [MSDSonline]
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.
Foaming
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
Anti-Inflammatory
Antimicrobial
Fights Acne
Removes dirt and impurities
Creates cleansing foam
Lifts away dirt and oil
Mixes oil and water
Traditional Use
A synthetic anionic surfactant developed in the 20th century for detergent and cleansing formulations. It was designed to provide improved cleansing performance compared to traditional natural soap.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR