Benzotriazole Based Ultraviolet Absorbers
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2-(2’-Hydroxy-3’,5’-di-t-butylphenyl)-5-chlorobenzotriazole.
Synonym: 2,4-di-tert-butyl-6-(5-chlorobenzotriazol-2-yl)phenol
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PowerSorb™ 327 is a strong absorber of ultraviolet radiation and has a high degree of photostability - photochemical energy absorbed in the ultraviolet region is dissipated as thermal energy.
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| Chemical Name: |
2-(2’-Hydroxy-3’,5’-di-t-butylphenyl)-5-chlorobenzotriazole |
| CAS No.: |
3864-99-1 |
| EINECS No.: |
223-383-8 |
| Formula: |
C20H24N3OCl |
| Molecular
Weight: |
358 |
| Specific Gravity [25°C, g/cm3]: |
1.26 |
| Melting Point(°C): |
154-158 |
| Flash Point(°C): |
454 |
| Vapor Pressure（20°C）: |
8.2E-9 |
| Volatile Loss(%): |
Max.0.5 |
| Color of Solution 460nm(%): |
Min.95 |
| Color of Solution 500nm(%): |
Min.97 |
| Appearance: |
Pale Yellow Powder |
| Ash(%): |
Max.0.1 |
| Min. Purity: |
99% |
| Solubility (20°C) |
% w/w |
| Xylene: |
15 |
| n-Butyl acetate: |
7 |
| Mineral spirits: |
5 |
| Methyl methacrylate: |
14 |
| Ethanol: |
0.3 |
| Ethyl acetate: |
6 |
| n-Hexane: |
3 |
| Dioctyl phthalate: |
3 |
| Toluene: |
16 |
| Methyl ethyl ketone: |
4 |
| Styrene: |
14 |
| Water: |
<0.01 |
PowerSorb™ 327 is particulary suitable for polypropylene and polyethylene as well as cold cured polyesters, polyurethanes, dyes, and pigments.
PowerSorb™ 327 can be used in combination with phenolic & phosphite antioxidants, and HALS to optimize performance in outdoor use.
PowerSorb™ 327 exhibits good initial color, low volatility, excellent stability to heat and light, superior wash fastness, and resistance to gas fading.
PowerSorb™ 327 almost does not absorb visible light, particularly applicable to colorless and light-colored products.
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PowerSorb™ 327 is supplied in 25Kg carton box or 50kg fiber drum.
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