Product Name: Optical brightener KSN(C.I. 368)
CAS No. :5242-49-9
EINECS No.: 226-044-2
Other Name: 4.4-bis(5-methyl-2-benzoxoazol)-ethylene;
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: Fluorescent brightener KSN is commonly used in the amount of 0.01-0.03%, that is, each 100kg of the materials, the fluorescent 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.