Cetylpyridinium chloride is a quaternary ammonium antiseptic. It is used as an active ingredient in mouthwashes and throat lozenges. It also serves as a preservative in cosmetics and as an antibacterial agent in pharmaceutical and deodorant formulations. The material is a white to off-white crystalline powder. Recorded grades include pharma, USP, Ph. Eur. and cosmetic. Packaging formats include 1 kg foil bags, 25 kg fibre drums and 100 kg drums. Cosmetic use is subject to the applicable cosmetic-ingredient conditions. Use in biocidal products depends on the applicable product authorisation. Pharmaceutical use requires the applicable pharmacopoeia grade.