配方类型:

RUBBER, PLASTICS AND WAXES

配方说明:

Bleaching Animal Fibers or Feathers

配方组成:

Heat to 135'F.
Wash well with warm water and drain.
In a stainless steel or ceramic tank pu
Soda ash/2.0 lb
Surfactant/0.1 lb
Detergent/2-3 lb
Hydrogen peroxide (35%)/1.5 gal
Tetrasodium pyrophosphate/3.0 lb
Detergent/1.0 lb
Water/100.0 gal
Water/100.0 gal

配制方法:

Put the hair in the above, loosely or in open-weave cotton bags.
Keep submerged for 4-15 hr. Adjust pH to 8.5-9.5 with pyrophosphate. A more active bleaching results if the pyrophosphate is replaced by sodium silicate (42'Be'). Next wash free from detergent and alkali.
Finally wash with cold water; Dry by centrifuge or wringer and then with hot air.