| 配方类型： |
RUBBER, PLASTICS AND WAXES |
| 配方说明： |
Bleaching of Burlap |
| 配方组成： |
Scour lightly in neutral soap and nonionic. Rinse. Saturate with 5
g/l chemic and, without squeezing, let lie for 20 min at room
temperature. Rinse and then immerse in a solution containing
sodium silicate, 42'Be/5
Peroxide, 35%/6 |
| 配制方法： |
boil for 2 hours. Rinse and sour with acetic acid or sour with potassium permanganate and neutralized with sodium bisulfite. |
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