Mazellier, Patrick published the artcileTransformation of 4-tert-octylphenol by UV irradiation and by an H2O2/UV process in aqueous solution, Recommanded Product: 4-(2,4,4-Trimethylpentan-2-yl)benzene-1,2-diol, the publication is Photochemical & Photobiological Sciences (2003), 2(9), 946-953, database is CAplus and MEDLINE.
The transformation of 4-(1,1,3,3-tetramethylbutyl)phenol (4-tert-octylphenol; OP) upon irradiation at 253.7 nm and by hydroxyl radicals generated by the photolysis (λexc =253.7 nm) of H2O2 in wastewater was studied. The quantum yield of direct OP photolysis in pure aqueous solution was 0.058±0.004 in aerated conditions ([O2] =272μM). The rate of photoreaction depends on O concentration; it increases with increasing [O2]. 4-Tert-octylcatechol was identified as one of the degradation products, together with a dimeric structure. The probable mechanism of OP photolysis involves photoejection of an electron from the singlet state, leading to the formation of the 4-tert-octylphenoxyl radical. In the presence of H2O2, the degradation of octylphenol by hydroxyl radicals was observed The 2nd-order rate constant was (6.4±0.5) × 109/M-s by direct measurement at various high concentrations of H2O2 and competitive kinetic measurements using atrazine as the competitor. The degradation products are 4-tert-octylcatechol and 2-hydroxy-5-tert-octylbenzoquinone. The later product may arise from the oxidation of 4-tert-octylcatechol by H2O2 or from a subsequent reaction of hydroxyl radicals with 4-tert-octylcatechol. Kinetic modeling when using either pure water or natural water simulated the elimination of 4-tert-octylphenol by UV and H2O2/UV processes.
Photochemical & Photobiological Sciences published new progress about 1139-46-4. 1139-46-4 belongs to alcohols-buliding-blocks, auxiliary class Benzene,Phenol, name is 4-(2,4,4-Trimethylpentan-2-yl)benzene-1,2-diol, and the molecular formula is C14H22O2, Recommanded Product: 4-(2,4,4-Trimethylpentan-2-yl)benzene-1,2-diol.
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