Applications
Methyltrioctylammonium chloride, also known as trioctylmethylammonium chloride, is a halogenated quaternary ammonium salt. Quaternary ammonium salts are a class of cationic surfactants. Among them, the series of halogenated quaternary ammonium salts (R1R2R3R4N+X-) are widely used in various fields, including household chemicals, textiles, printing and dyeing, mining, asphalt, construction, plastics processing, oil extraction, and petrochemicals, where they play a significant role.
Preparation
Weigh 1000 g of trioctylamine into a beaker, add concentrated hydrochloric acid dropwise (total amount of HCl added is approximately 103 g), stir with a magnetic stirrer, and after the neutralization reaction is complete, evaporate approximately 80% of the water using a constant-temperature water bath, then vacuum-dry to obtain the product, trioctylammonium chloride; Weigh 1,000 g of trioctyl ammonium chloride and 235 g of dimethyl carbonate, respectively, and add them sequentially to a 10-L reactor. Purge the reactor with nitrogen to remove air, then seal it for the reaction. The reaction temperature is 170°C; stirring begins once the temperature reaches 170°C, and the reaction time is 8 hours; Upon completion of the reaction, approximately 1,026 g of methyl trioctyl ammonium chloride was obtained.
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