| 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： |
water/19
immersion.
immerse the part of the fabric with the rust or ink spot
A) ammanium sulfide solution/1
water/19
alternately in solutions A and B , rinsing with watet after each
rust and ink remover
B) oxal8c acid/1 |
|
