Pulp bleaching agent FAS

Pulp bleaching agent FAS
1)Appearance: Odorless crystal powder.
2)Purity: 99.0%Min
Pulp bleaching agent FAS
1)Appearance: Odorless crystal powder.
2)Purity: 99.0%Min
3)Iron(Fe):10ppm Max
4)Under alkali conditions, add FAS water solution into pulp to bleach the pulp, the quantity is decided by the pulp nature, usually one ton pulp need 0.3%~0.6% FAS.
Technics Conditions as follows:
a.
FAS dosage: 0.5%.
b.
NaOH dosage: NaOH:FAS=1:2(Weight).
c.
PH: 8.8~9.0.
d.
Time and Temperature: Under 8 0°C at least 30Min.When the temperature is low, can lengthened bleaching time accordingly