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, Palst-3529
  UVA (Ultraviolet absorbents)
 

Pamsorb-531, Pamsorb-P
Pamsorb-234, Pamsorb-326
Pamsorb-327, Pamsorb-328
Pamsorb-1164, Pamsorb-1577

   
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Light stabilizers  
    Ultraviolet absorbents    
    Pamsorb-531 | Pamsorb-P
Pamsorb-234
|
Pamsorb-326 | Pamsorb-327 | Pamsorb-328
Pamsorb-1164 | Pamsorb-1577
   
    __________________________________________________________________________    
    Ultraviolet absorbent Pamsorb-326    
   

Chemical name: 2-(2'-Hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzortriazole
Equivalent: Tinuvin 326 ( Ciba SC ) /Lowilite 26 (Chemtura)/ Uvinul-3026 (BASF)
Molecular formula: C17H18N3OCl
Molecular weight: 315.80
CAS No.: 3896-11-5
Structural formula:

 
Physical properties

Appearance: Slightly yellow powders
Melting range: 137 ~ 141 ˇăC

Flash point: N/A
Specific gravity (g/cm3), @20 ˇăC: N/A

Solubility (g/ 100g solvent), @20 ˇăC

Water: Insoluble
Chloroform: 11

Acetone: 2
Hexane: 1

   

Specifications

Appearance: Yellowish crystal powders
Assay: 99.0% min
Melting point: 138.0 ˇăC min
Ash: 0.1% max

Volatile: 0.5% max
Transmittance (440nm): 97.0% min
Transmittance (500nm): 98.0% min

   
Applications

Pamsorb-326 is an important ultraviolet absorber of benzotriazole series, which is stable, nontoxic, and of higher absorbency for ultraviolet ray. It is widely used for photosensitive materials and polymerized material, coating and so on.

   

Packing

25kg/bag

 
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HALS (hindered amine light stablizers)
Palst-770 | Palst-622 | Palst-944 | Palst-783 | Palst-791 | Palst-3346 | Palst-3529
 
   
         
     
   
   

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