Benzotriazole Based Ultraviolet Absorbers
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2-(2'-hydroxy-5'-tert-octylphenyl) benzotriazole .
Synonym: 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol
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PowerSorb™ 329 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers.
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| Chemical Name: |
2-(2'-hydroxy-5'-tert-octylphenyl) benzotriazole |
| CAS No.: |
3147-75-9 |
| EINECS No.: |
221-573-5 |
| Formula: |
C20H25N3O |
| Molecular
Weight: |
323 |
| Specific Gravity[25°C]: |
1.18 |
| Melting Point(°C): |
102-106 |
| Volatile Loss(%): |
Max.0.5 |
| Color of Solution 460nm(%): |
Min.97 |
| Color of Solution 500nm(%): |
Min.98 |
| Appearance: |
white powder |
| Ash(%): |
Max.0.1 |
| Min. Purity: |
99% |
| Solubility (20°C) |
% w/w |
| 3-A Alcohol: |
0.7 |
| Benzene: |
65 |
| n-Butanol: |
2 |
| Dioctyl phthalate: |
15 |
| Ethanol: |
0.6 |
| Ethyl acetate: |
27.2 |
| n-Heptane: |
8.1 |
| Methyl cellosolve: |
5 |
| Methylene Chloride: |
70.9 |
| Methyl methacrylate: |
12 |
| Styrenel: |
22 |
| Xylene: |
50 |
| Water: |
<0.01 |
PowerSorb™ 329 protects polymers from UV radiation, helping to preserve the original appearance and physical integrity of molded articles, films, sheets and fibers during outdoor weathering.
PowerSorb™ 329 provides effective light stabilization and prevents the yellowing and degradation of polymers such as polycarbonate, unsaturated polyesters, and acrylics.
PowerSorb™ 329 can be used in combination with phenolic & phosphite antioxidants, and HALS to optimize performance in outdoor use. |
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PowerSorb™ 329 is supplied in 25kg carton box.
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