Sodium trideceth sulfate

Sodium Trideceth Sulfate (CAS 25446-78-0, EC 246-985-2) is an ethoxylated alkyl sulfate surfactant derived from tridecyl alcohol, supplied commercially as Rhodapex EST-65, Univar EST65, and STEOL-TD 402-65. It carries no assigned E-code and is classified under the broader category of anionic surfactants.

In personal care formulations, it functions as a primary surfactant in shampoos and body washes, generating dense foam while solubilising sebum and residue through its hydrophilic-lipophilic balance. In textile and leather processing, it acts as an emulsifier and wetting agent, enabling uniform dye penetration and consistent fibre treatment across production batches.

The material is available in liquid grade at approximately 65% active content and is registered under REACH. European procurement is supported through standard IBC and drum packaging. Buyers should confirm supplier documentation for REACH compliance and safety data sheets aligned with EU GHS requirements.