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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