Fenothiazine

Phenothiazine (CAS 92-84-2, EC 202-196-5, formula C12H9NS) is a sulfur- and nitrogen-containing heterocyclic compound, commercially known under trade names including Feeno, Fenoverm, Vermitin, and ENT 38. It carries no assigned E-code and is classified under HS code 29343090.

In plastics and rubber manufacturing, phenothiazine functions as a radical scavenger, intercepting peroxy radicals during processing to prevent premature polymerization and thermal degradation. In lubricant formulations, it inhibits oxidative breakdown of base oils under high-temperature conditions, extending fluid service life. It also serves as an antimicrobial agent in agricultural and veterinary applications.

Phenothiazine is supplied in prill or bead form, supporting consistent handling and dosing in industrial processes. It is subject to REACH registration requirements within the EU. Buyers should confirm grade specifications and purity certificates directly with the supplier to ensure compliance with their application requirements.