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.