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:3943

Chemical Name : 3 - ( 2'- hydroxy -3 ' , 5'- two-amyl phenyl) benzotriazole 
Formula : C 22 H 29 N 3  
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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