Cetyltrimethylammonium chloride is an organic compound that is a cationic surfactant suitable for products such as softeners and hair conditioners. It can be used as waterproofing coatings, softener for natural fibers, synthetic fibers and glass fibers, phase transfer catalyst, promoter for polyester silk, insulating agent and defoamer for latex products, and softener. It is resistant to heat, light and strong acids and alkalis. It has excellent stability and biodegradability.