Ultraviolet absorbent UV-328

Chemical Name: 2-(2-Hydroxy-3,5-dipenryl-phenyl) benzotriazole 
Molecular formula: C₂₂H₂₉N₃O 
Molecular weight: 351.5
Chemical Structural formula: 

 

Sales code: PS-8
Appearance: white - light yellow powder 
Assay: ≥ 99% 
Melting point: 80-83℃
Loss on dry: ≤ 0.5% 
Ash: ≤ 0.1%

Light transmittance:

Wavelength nm	Light transmittance %
460	≥ 96
500	≥ 97