Hexadecyl trimethyl ammonium chloride is a cationic surfactant, soluble in water, methanol, and ethanol. It is mainly be used as softener and hair conditioner. It also can be used as softener in waterproof coatings, natural fiber, synthetic fiber, and glass fiber. It has good compatibility with cationic, nonionic and amphoteric surfactants. Hexadecyl trimethyl ammonium chloride has good chemical stability, heat resistance, light resistance, pressure resistance, resistance to acid and alkali, and it also has excellent properties of permeability, softness, emulsification, anti electrostatic and bactericidal. z