The method of preparing cocoamidopropyl betaine based on coconut oil is introduced, and the active substance containing in products is determined by means of perchloric acid potentiometric titration.

• 介绍了用椰子油制备椰油酰胺丙基甜菜碱的方法,并用高氯酸电位滴定法对其活性物含量进行了测定;考查了反应物物质的量比及反应时间对活性物含量的影响。