Tert-dodecyl mercaptan

Tert-dodecyl mercaptan (CAS 25103-58-6), also known as t-DDM, t-dodecanethiol, and by the trade name Sulfole 120, is a branched-chain aliphatic thiol with the molecular formula C12H26S. It carries no assigned E-code. The compound is classified under HS code 29309070 for customs and trade purposes.

In polymer manufacturing, t-DDM functions as a chain-transfer agent during free-radical polymerization, regulating molecular weight by terminating and restarting growing polymer chains. In food and fragrance applications, it contributes sulfurous, savory top notes at trace concentrations. Coatings and adhesives formulators also use it as a catalyst precursor in curing systems.

Tert-dodecyl mercaptan is supplied as a clear liquid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm grade specifications against FCC standards when sourcing for food-contact or flavoring applications. Standard packaging formats should be confirmed with the supplier at the time of inquiry.