Optical brightener KSN(C.I. 368)

CAS No.

5242-49-9

EINECS No.

226-044-2

Other Name

4-(2-Benzoxazolyl)-4'-(5-methyl-2-benzoxazolyl)stilbene

Molecular formula:

C29H20N2O2

Appearance

Yellow crystalline powder

Purity

≥99.95%

Melting point

269ºC~271°C 

Ash:

≤0.1%

Volatile:

≤0.5%

Fineness

≥ 120 mesh

Package

20kg per carton, 25/30kg per fiber drum with PE liner, or as per the customers' requirements.

Applications:
It is used in thermoplastic plastics PVC, PE, PP, PS, ABS, SAN, SB, CA, PA, PMMA, acrylic resin, polyester fiber paint, coating the brightening of printing ink.

Properties:

Bright yellow crystal powder, odorless, Decomposition temperature is large than 275°C. It is hard to dissolve in water.

Dosage: 

Optical brightener KSN is commonly used in the amount of 0.01-0.03%, that is, each 100kg of the materials, the Optical brightener KSN takes 10g-30g or can be adjusted according to the requirements of the product or test.

Storage: To avoid light, can be stored in cool and dry place for 24 months.