Calcium dodecylbenzenesulfonate

Calcium dodecylbenzenesulfonate (CAS 26264-06-2) is an anionic calcium sulfonate surfactant commercially available under trade names including Ninate 401, Casul 70HF, and the designations 1371A. It carries no assigned E-code and is identified under EC number 247-557-8.

In agricultural formulations, it functions as an emulsifier for crop protection concentrates, stabilising oil-water interfaces through its dual hydrophilic sulfonate and lipophilic alkyl chain structure. In metalworking and lubricant applications, it acts as a corrosion inhibitor and emulsifying agent in cutting fluids, adsorbing onto metal surfaces to displace water and reduce interfacial tension.

Calcium dodecylbenzenesulfonate is supplied as a granular solid and is subject to REACH registration requirements for EU market supply. Procurement teams should confirm grade specifications, including active content and calcium content, directly with the supplier, as industrial and agricultural grades may differ in purity and additive profile.