Product Cate	Optical Brightening Agent For Textile and Daily Use
Product Name	Optical Brightening Agent 4BK
CAS No.	12768-91-1
C.I. No.	113
Main Chemical Composition	Stilbene bistriazine derivative
Properties	1) With strong fluorescence, excellent whitening effect and slight bluish shade 2) With high light resistance and chemical stability. 3) Good acid resistance, stable in perborate and hydrogen peroxide.
Treating Process	Exhaust process: 0.1-0.8% (o.w.f.), bath ratio: 1:10-30 Temperature 90--100??C?á30-40min-wash-dry. The process can be adjusted according to the actual situation. One bath process of Scouring hydrogen peroxide bleaching and whitening: Dosage:0.2-0.8%( o.w.f.) Stabilizer:1-5g/L Scouring agent:0.5-1g/L hydrogen peroxide:5-15/L NaOH:2-4g/L bath ratio:1:10-30 Temperature:90--100??C×30-40min wash dry. The processing can be adjusted according to the actual situation.
Package	25kg 50kg per cardboard drum
Technical Index	Appearance:Slight yellow uniform powder Shade: Slight bluish Water:<5% Fineness(120 mesh residue):≤5%
Uses	Mainly be used in whitening of cotton fabric and polyester /cotton blends.T/C whitening in one bath.