| 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： |
glycerin/5 oz
sponge the hat with a soluton of
alcohol/10 oz
water/75 oz
sodium hyposulfite/10 oz
lay the hat aside in a damp place for 24 h and then apply a
mixture of
citric acid/2 oz
straw-hat cleaner
alcohol/10 oz
water/90 oz |
|
