Sodium octyl sulfate

Sodium Octyl Sulfate (CAS 142-31-4) is an anionic surfactant also known by trade names Sipex OLS, Duponol 80, Cycloryl OS, and Cyclorylos. It carries no assigned E-code. With the molecular formula C8H18O4S.Na, it belongs to the alkyl sulfate family and is classified under HS code 29209010.

In personal care formulations, it functions as an emulsifier and foam-control agent by reducing interfacial tension between oil and water phases. In textile and leather processing, it acts as a wetting and dispersing agent, enabling uniform dye penetration and consistent surface treatment. It also serves as a catalyst and heat stabilizer in select industrial processes.

Sodium Octyl Sulfate is supplied as a coarse white powder and is subject to REACH registration requirements for EU procurement. Buyers should confirm grade specifications against intended application standards, as purity profiles vary between cosmetic and industrial grades. Standard packaging formats should be confirmed with the supplier at the time of inquiry.