Tinuvin 328 Lowilite 28 Benzotriazole UV Absorber , CAS No. 25973 -
55 – 1
Quick Detail :
UV 328 is a UV absorber of the hydroxyphenylbenzotriazole class ,
which imparts out - standing light stability to plastics and other
organic substrates .
- Name : UV328
- Chemical name : 2 - ( 2H - Benzotriazol - 2 - yl ) - 4 , 6 -
- CAS No. : 25973 - 55 - 1
UV328 exhibits strong absorbance in the 300 - 400nm region and
minimum absorption in the visible region ( ＞ 40nm ) of the spectrum
. The absorption maximum area is at 306nm and 347nm in chloroform
UV 328’s use level ranged between 0.1 and 1.0 % depending on the
substrate and performance requirements of the final application .
The product can be used alone or in the combination of other
additives . It could particularly get a good performance in the
combination of hindered amine light stabilizers such as LS 770 , LS
622 , LS 791 and so on .
|Assay (GC)||99% min|
|Transmittance||460nm 97.5% min|
|500nm 98.0% min|
Competitive Advantage :
TINUVIN 328 features strong UV absorption , low initial color ,
excel compatibility in a wide range of substrates , good solubility
in plasticizers and monomers and moderately low volatility .
Hongkun is one of the important manufacturers of UV328 in China
with the same quality of BASF , and the application effect has been
proved by many customers .