murphySodium Tridecyl Sulfate
AKA: Tridecyl sodium sulfate, Sodium tridecyl sulphate, 1-Tridecanol, Hydrogen sulfate, Sodium salt, RHODAPON TDS, HSDB 5912
Synthetic
Cleanser
Emulsifier
Not Clean
OriginDerived from long-chain alcohols or fatty acids, typically synthesized from petroleum or plant-based feedstocks. Produced through sulfonation of tridecyl alcohol followed by neutralization with sodium hydroxide.
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Formula
C13H27NaO4S
Mol. Weight
302.41
CAS #
3026-63-9
Form
Powder
State
White powder; [MSDSonline]
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Eye Irritant in Testing
1 study / 1 irritating / reactions moderate (CIR 532)
Skin Irritant in Testing
1 study / 1 irritating / reactions corrosive (CIR 532)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2010
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR