配方类型:

ELEMENTARY Preparations

配方说明:

soaps are made fron a fat or fatty acid and an alkali. they
lathetr and produce a foam which entraps dirt and grease. there are
many kinds of soaps.
cleaners contain a solvent, such as naphtha, with or without a soap.
abrasive cleaners are soap pastes containing powdered pumice, stone,
ailica, etc.

配方组成:

glycern/4
water/11
red oil (oleic acid)/4
solid caustic potash/1
concentrated liquid soap

配制方法:

dissolve the caustic soda in water, add the glycerin, and bring dto a boil in an enameled pot. remove from the heat, add the red oil slowly, while stirring. if a more neutral soap is wanted, use more red oil.