Zinc salicylate

Zinc salicylate (CAS 16283-36-6), also known as zinc disalicylate or Bontron E 304, is the zinc salt of salicylic acid carrying the E-number designation E 304. It is registered under EC 240-380-7 with the molecular formula C14H10O6Zn.

In personal care formulations, zinc salicylate functions as an antioxidant by chelating metal ions that would otherwise catalyse oxidative degradation of active ingredients and emollients. In pharmaceutical preparations, it serves a stabilising role in topical products, helping to extend shelf life by interrupting free radical chain reactions at the formulation level.

Zinc salicylate is supplied as a white crystalline powder compliant with REACH registration requirements for the European market. Procurement teams should confirm applicable grade specifications, including purity thresholds aligned with cosmetic or pharmaceutical standards, prior to ordering. Standard packaging formats vary by supplier; consult our technical team for available lot sizes and documentation.