Dioctadecyl ether

Dioctadecyl ether (CAS 6297-03-6) is a symmetrical long-chain ether produced by the condensation of two stearyl alcohol molecules. It is also known under trade names such as Nacol 18, Cosmacol SE, and Distearyl Ether, with the synonym NSC 17520 used in research contexts. It carries no assigned E-code and is classified under HS code 2909.19.1800.

In personal care formulations, it functions as a non-polar emollient carrier that reduces surface friction and improves spreadability without contributing to greasiness. In textile and leather processing, its ether linkage provides chemical stability under mechanical stress, making it effective as a lubricating agent for fiber treatment and finishing baths. It also serves as a base component in metalworking lubricant blends.

Dioctadecyl ether is supplied in powder and crystalline form and is subject to REACH registration requirements for European supply chains. Procurement teams should confirm grade specifications and batch documentation directly with the supplier, as cosmetic and industrial grades may differ in purity thresholds.