Sodium castorate is formed during the saponification of castor oil.
The fatty acids naturally found in castor oil are mixed with sodium hydroxide also known as lye. This chemical process forms sodium castorate (soap) and glycerin.
Castor bean is a magnificent shrub in the castor bean family with chestnut-like fruits. Castor oil is extracted from the seeds of the castor plant by “cold pressing” when they are crushed and pressed without heating.