UV ABSORBER
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Ultraviolet absorbent UV-328
Hangzhou caidie chemical co.,ltd. http://www.caidiechem.com | Updated:2013-06-08 | Source:  | Read:5052

Chemical Name : 3 - ( 2'- hydroxy -3 ' , 5'- two-amyl phenyl) benzotriazole 
Formula : C 22 H 29 N 3 O  
Molecular Weight : 351.5 
CAS NO. : 21615-48-6

Chemical structure formula :


Sales Code : PS-8  
Appearance :  white - light yellow powder 
Content : ≥ 99%  
Melting Point : 80-83 ° C 
Loss on drying : ≤ 0.5%  
Ash : ≤ 0.1%  
Transmittance : 

Wavelength  nm 

Transmittance  % 

440 

≥ 96

500 

≥ 97



Toxicity :  Low toxicity, the U.S.  FDA  has approved for use in food packaging materials. 
Usage :  As the ultraviolet absorber, the product is mainly used in polyolefins, polystyrene, polyvinyl chloride, polyurethane, polyester, and other products. Benzotriazole UV absorbers are excellent varieties. Maximum absorption wavelength of  345nm  .Generally with about  0.1%  . 
Water solubility :  soluble in benzene, toluene, styrene, cyclohexane, methyl methacrylate, ethyl acetate, ketones and other organic solvents.


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