Cetylpyridinium chloride monohydrate

Cetylpyridinium Chloride Monohydrate (CPC Monohydrate, CAS 6004-24-6) is a quaternary ammonium compound functioning as a cationic surfactant and antimicrobial agent. It carries no assigned E-code. The substance is commercially referenced as CPC or Cetylpyridinium Chloride H2O across personal care and pharmaceutical supply chains.

In oral care and topical pharmaceutical formulations, CPC disrupts bacterial cell membranes by binding to negatively charged microbial surfaces, delivering broad-spectrum antimicrobial action at low concentrations. In hair conditioning systems, the cationic charge adsorbs onto damaged hair fibers, reducing static and improving combability while contributing lubrication and emollient properties.

CPC Monohydrate is supplied as a powder grade meeting Ph.Eur. and USP/NF monograph specifications, supporting use in regulated pharmaceutical and cosmetic applications. The substance falls under REACH registration requirements within the EU. Procurement is available in standard industrial packaging; buyers should confirm grade specification against their intended application.