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:

pure rubber/1/8 oz
paraffin wax/2/5 oz
benzol/13 oz
carbon tetrachloride/to make 1 gal
gum dammar/1 1/5 oz
waterproofing liquid

配制方法:

dissolve the rubber in the benzol, add the other ingredients, and allow to dissolve.