The basic chemical reaction of soap is the interaction of oil and alkali to form soap and glycerin. CH2OCOR | heating CHOCOR + 3NaOH ——–> 3R-COONa + CH2OH-CHOH- CH2OH |CH2OCOR The soap obtained by the reaction is salted out, washed, and finished, and is called a soap base, and further processed to form soaps of