Benzotriazole Based Ultraviolet Absorbers
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2-[2-hydroxy-3,5-di-(1,1-dimethylbenzyl)]-2H-benzotriazole.
Synonym:2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl) phenol
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PowerSorb™ 234 is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting excellent light stability to a variety of polymers.
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| Chemical Name: |
2-[2-hydroxy-3,5-di-(1,1-dimethylbenzyl)]-2H-benzotriazole |
| CAS No.: |
70321-86-7 |
| EINECS No.: |
274-570-6 |
| Formula: |
C30H29N3O |
| Molecular
Weight: |
448 |
| Specific Gravity[20°C]: |
1.22g/cm3 |
| Melting Range: |
138-142°C |
| Volatile Loss(%): |
Max.0.3 |
| Color of Solution 460nm (%): |
Min.97 |
| Color of solution 500nm (%): |
Min.98 |
| Vapor Pressure 20°C: |
~2-10Pa |
| Appearance: |
Off-white Powder |
| Ash (%): |
Max.0.05 |
| Min. Purity: |
99% |
| Solubility (20°C) |
% w/w |
| Benzene: |
10 |
| Acetone: |
2 |
| Ethyl acetate: |
4 |
| Chloroform: |
35 |
| n-Hexane: |
0.6 |
| Methanol: |
<0.1 |
| Cyclohexane: |
5 |
| Ethanol: |
0.3 |
| Dichloromethane: |
34 |
| MEK: |
13 |
| Butylcarbitol |
0.2 |
| Butanol: |
0.3 |
| Butylacetate: |
4.5 |
| ethylglycol: |
1 |
| xylene: |
10 |
| Toluene: |
20 |
| Water: |
<0.01 |
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PowerSorb™ 234 is highly effective for polymers processed at high temperatures such as polycarbonates, polyalkylene terephthalates, polyacetals, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane and polyurethane fibers, as well as for polyvinylchloride, styrene homo- and copolymers. Applications include molded articles, films, sheets and fibers.
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PowerSorb™ 234 is supplied in 25kg cartons or drums.
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