Optical Brightener Ksn

Product Name Optical brightener KSN
CAS No. 5242-49-9
EINECS No. 226-044-2
Other Name 4.4-bis(5-methyl-2-benzoxoazol)-ethylene;
Molecular formula: C30H22N2O2
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, 2530kg 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.