2-(2′-Hydroxy-3′5-di-tert-butylphenyl) benzotriazole
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2-(2′-Hydroxy-3′5-di-tert-butylphenyl) benzotriazole
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CAS No:
3846-71-7
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Formula:
C20H25N3O
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Chemical Name:
2-(2′-Hydroxy-3′5-di-tert-butylphenyl) benzotriazole
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Synonyms:
Phenol,2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)-;Phenol,2-(2H-benzotriazol-2-yl)-4,6-di-tert-butyl-;2-(2H-Benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)phenol;Tinuvin 320;2-(2′-Hydroxy-3′,5′-di-tert-butylphenyl)benzotriazole;2-(2-Hydroxy-3,5-di-tert-butylphenyl)benzotriazole;2-(2-Benzotriazolyl)-4,6-di-tert-butylphenol;2-(3,5-Di-tert-butyl-2-hydroxyphenyl)benzotriazole;2-(3,5-Di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole;Sumisorb 320;Viosorb 582;Kemisorb 75;Seesorb 705;2-(3′,5′-Di-tert-butyl-2′-hydroxyphenyl)benzotriazole;Eversorb 77;2-(2-Hydroxy-3,5-di-tert-butylphenyl)-2H-benzotriazole;2-(2′-Hydroxy-3′,5′-di-t-butylphenyl)benzotriazole;2-(2′-Hydroxy-3′5-di-tert-butylphenyl) benzotriazole;UV 320;Chisorb 320;2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4,6-di-tert-butylphenol;2-(Benzotriazol-2-yl)-4,6-ditert-butylphenol;3135-21-5;29820-26-6;104817-17-6;131242-54-1;134512-21-3;189377-88-6;208761-49-3;420135-91-7;474264-63-6;796971-92-1;1357193-40-8
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CAS No:
2-(2′-Hydroxy-3′5-di-tert-butylphenyl) benzotriazole Basic Attributes
323.44
323.43
223-346-6
US7KL87A2P
DTXSID4052059
2933990090
Safety Information
3077
48/22-52/53
26-36/37/39
P260, P264, P270, P314, P501
H372
|Warning|H351 (83.48%): Suspected of causing cancer [Warning Carcinogenicity]|P201, P202, P260, P273, P281, P308+P313, P314, P405, and P501|Aggregated GHS information provided by 116 companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|Danger|H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]|P260, P264, P270, P314, and P501
2-(2′-Hydroxy-3′5-di-tert-butylphenyl) benzotriazole Use and Manufacturing
2-(2-Hydroxy-3, 5-di-tert-butylphenyl)-2H-benzotriazole When using the general procedure of Example 5, a 23percent by weight suspension of 2-nitro-2'-hydroxy-3', 5'-di-tert-butylazobenzene in isopropanol/triethylamine (1/0.18) was hydrogenated at 45° C. at 1 atmosphere pressure for 3 hours in the presence of 3percent of a 5percent palladium on charcoal catalyst the above noted product was obtained in a yield of 77percent.EXAMPLE 3 35.5 g (0.1 mol) of 2-nitro-2'-hydroxy-3', 5'-di-t-butylazobenzene, 0.125 g of 5percent palladium carbon, 100 ml of toluene, 100 ml of IPA, 100 ml water and 8.3 g of caustic soda were charged into a 500-ml stainless autoclave equipped with an agitator. After the air in the autoclave had been replaced by hydrogen, the pressure of hydrogen was set to 10 kg/cm2. Reaction was effected in the same way as that employed in Example 1. After the reaction had been completed, the catalyst was filtered off. When part of the filtrate was subjected to quantitative analysis using GC, it was found that the yield of 2-(2'-hydroxy-3', 5'-di-t-butylphenyl)benzotriazole is 82percent. After the solvent had been distilled off from the filtrate, the residual solid was crystallized by IPA, washed with IPA and then dried to obtain 23.6 g of 2-(2'-hydroxy-3', 5'-di-t-butylphenyl)benzotriazole (yield, 73percent; melting point, 150°to 152° C.).EXAMPLE 10 2-Nitro-2'-hydroxy-3', 5'-di-tert.-butyl-azobenzene is reacted, according to Example 8, to give 2-(2'-hydroxy-3', 5'-di-tert.-butyl-phenyl)-benzotriazole in a yield of 70percent of theory.EXAMPLE 17 2-(2-Hydroxy-3, 5-di-tert-butylphenyl)-2H-benzotriazole When using the general procedure of Example 1, a 22percent by weight suspension of 2-nitro-2'-hydroxy-3', 5'-di-tert-butylazobenzene in isopropanol/triethylamine (1/0.18) was hydrogenated at 45° C. in the presence of a Raney nickel catalyst (6percent by weight based on the azobenzene intermediate) for a period of 13 hours, the above named compound was obtained in a 67percent yield. When the amount of catalyst above was increased to 20percent by weight based on the azobenzene, the hydrogenation was completed in 1.1 hour at 45° C. to give a 75percent yield of product.
UV-320 is an efficient light stabilizer, widely used in plastics and other organic materials, including unsaturated polyester, PVC, PVC plasticizing, etc., in polyurethane, polyamide, synthetic fibers, especially poly In the application of grease and epoxy resin. Used in plastics and other organic materials, such as unsaturated polyester, PVC, PVC plasticizing, etc.
Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)-: ACTIVE
Computed Properties
Molecular Weight:323.4
XLogP3:7.3
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:3
Rotatable Bond Count:3
Exact Mass:323.199762429
Monoisotopic Mass:323.199762429
Topological Polar Surface Area:50.9
Heavy Atom Count:24
Complexity:425
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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2-(2′-Hydroxy-3′5-di-tert-butylphenyl) benzotriazole
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