Fluorescent Brightener KSN

Fluorescent Brightener KSN is a kind of plastics additives that can absorb UV light then emit visible blue light to reduce the yellowish and make the products whiter.
Fluorescent Brightener KSN mainly used in whitening of polyester, polyamide, polyacrylonitrile fiber, the plastic film and all plastic pressing process. Can suitable for synthesizing high polymer including polymeric process.

Product Name Fluorescent Brightener KSN

Chemical Name 4.4-bis(5-methyl-2-benzoxoazol)-ethylene
CAS No. 5242-49-9
C.I. No. 368
Structural Formula
Molecular Formula C30H22N2O2 
Dosage Overlay plastic:0.5-2g/100kg 
Polyester fiber:10-20g
Technical Index Appearance: greenish yellow powder 
Melting process: 300~320°C 
Ash content:≤0.5%            Purity:≥99% 
Volatile content:≤0.5%         Fineness(300 mesh):100% 
Uses mainly be used in whitening of polyester, polyamide, polyacrylonitrile fiber, the plastic film and all plastic pressing process. Can suitable for synthesizing high polymer including polymeric process.
Package 10kg/25kg per fiber drum