optical brightening agent KCB 
C.I.367  CAS No. 5089-22-5

STRUCTURE:

CHEMICAL NAME: 2,2'-(1,4-Naphthalenediyl) bisbenzoxazole
MOLECULAR FORMULA: C26H26N2O2S
MOLECULAR WEIGHT: 430.2 (As International relative Atom Mass 1997)
Max UV ABSORPTION WAVELENGTH: 375 nm (ethanol)
Max OPTICAL EMISSION WAVELENGTH: 435 nm
EXCUTIVE STANDARD: Q/LQH009-2003

SPECIFICATIONS:

 
 
PROPERTIES:

Optical brightener KCB is a kind of benzoxazole compound and owns strong whitening effect and its colour shade is brilliant blue glaze. It is insoluble in water and the solubility in the  100 mL solvents as follow: 1.02 g , 0.8 g (carbon tetrachloride), 0.17g (acetone), 0.76 g (dimethylformamide).
It is mainly used to whiten synthetic fiber and plastics and can be added at any stage in the process of whitening the polymers and make the finished products emitt a bright bluish white glaze. It can also be used as special marks in identify fakless material if used in printing ink.
DIRECTION FOR USAGE: 
Thoroughly and uniformly dispersed in all those polymers, and the effect of using concentrated master batch of optical brightener KCB is better.
DOSAGE: 
Usually 0.01%-0.03%. The optimal dosage of optical brightener KCB should be adjusted according to the actual requirements.
PACKAGE: Packaged in iron drum or cardboard barrels. Net weight is 25 kg or 50 kg each.
STORAGE: Should be stored in cool and dry place. 

Why us :
 
1. High quality under strict QC/QA system with GMP factory price and best service.
 
2. Fast and safe delivery with secure and discreet shipment.

3. Double check before delivery to make sure correct.

4. Third-party Inspection
 
5. Providing complete services with our resource integration, we can thus create more competitive advantages for you!


Thank you for ordering and hope you enjoy your purchase here. Your comments are always welcomed and very important in our long-term business corporation.

FREE SAMPLES can be sent for your evaluation!
Contact me now for further business :-)

Our factory



Our laboratory