Methyl trioctyl ammonium chloride, also known as trioctyl methyl ammonium chloride, is a quaternary ammonium halide salt. Quaternary ammonium salt is a kind of cationic surfactant, among which the quaternary ammonium halide salt (R1R2R3R4N+X-) series compounds are widely used in daily chemical industry, textile, printing and dyeing, mining, asphalt, construction, plastic processing, petroleum mining, petrochemical and other fields, playing an important role