C.I.Number: 363
Main chemical name: Benzimidazole Derivatives
Specification:
Appearance: Brown liquid
Ionic character: catinic
Whitening Strength: 100±2%
Property:
1.with strong fluorescene, excellent whitening performance and bluish-violet shade.
2.Good acid stability, stable in Sodium chlorous.
Application: Main be used in whitening of acrylic and blends.
Treating Process:
1. For pure acrylic:
Dosage: 0.2–1.0%(BAC) 
PH: 3-4 (Adjusted by oxalic acid)
Bath ratio: 10-40
temperature: 90 ~98℃×40-60min
2. One bath process of scouring hydrogen peroxide bleaching and whitening:
Dosage: 0.2–1.0%(BAC) 
hydrogen peroxide: 1-2g/L
Dodium nitrate: 1-3g/L
PH: 3.5-4 (Adjusted by oxalic acid)
Bath ratio: 10-40
temperature: 90 ~98℃×30-40min