4-tert-octylphenol

Bangsgaard, K., Madsen, S.S., and Korsgaard, B. (2006). Effect of waterhome exposnre to 4-tert-octylphenol and 17(beta)-estradiol on smoltification and downstream migration in Atlantic salmon, Salmo salar. Aquatic Toxicology 80, 23-32. 

Figure 1. Formation of carbonyl groups in 0.1 mm PP films as a function of irradiation time in Xenotest 150 (13). (UVA)2-(2 -hydroxy-3, 5 -di-tert-butylphenyl)-5-chloro-benzotriazole (Ni-Comp) Nickelf2,2 -thiobis-(4-tert-octylphenolate)]-n-butyl-amine (Benzoate) 2,4-di-tert-butylphenyl-3,5-di-tert-buty 1-4-hydroxy-benzoate (HALS) Bis-(2,2,6,6-tetramethyl-piperidinyl-4)sebacate.

Tetralin vapor, 17 76 Tetralkyl pyrophosphates, 19 27 4-(l,l,3,3-Tetramethylbutyl)phenol. See 4-tert-Octylphenol... 

The Efi values obtained at 25°C for solvents comprised of BC6 (0.005 M), modifiers 1-5, and 4-tert-octylphenol (0.25 M) in 1,2-dichloromethane (1,2-DCE) show a good correlation with DCs values (Table 4.16). Both the DCs and / f values for 1-5 increase as the expected acidity of the alcohol increases, based on increasing the... 

Kawaguchi, M., Ito, R., Sakui, N., Okanouchi, N., Saito, K., Seto, Y., Nakazawa, H. Stir-bar-sorptive extraction, with in-situ deconjugation, and thermal desorption with in-tube silylation, followed by gas chromatography-mass spectrometry for measurement of irrinary 4-nonylphenol and 4-tert-octylphenol glucuronides. Anal. Bioanal. Chem. 388, 391-398 (2007)... 

Ferreira-Leach, A.M.R. and E.M. Hill. Bioconcentration and metabolism of 4-tert-octylphenol in roach (Rutilus rutilus) fry. Analusis 28 789-792, 2000. 

Tsuda, T., A. Takino, M. Kojima, H. Harada, K. Muraki and M. Tsuji. 4-Nonylphenols and 4-tert-octylphenol in water and fish from rivers flowing into Lake Biwa. Chemosphere 41 757-762, 2000. 

Seki, M., H. Yokota, M. Maeda, H. Tadokoro and K. Kobayashi. Effects of 4-nonylphenol and 4-tert-octylphenol on sex differentiation and vitellogenin induction in medaka (Oryzias latipes). Environ. Toxicol. Chem. 22 1507-1516, 2003. 

Pedersen SN, Lindholst C (1999) Quantification of the xenoestrogens 4- tert. -octylphenol and bisphenol A in water and in fish tissue based on microwave assisted extraction, solid-phase extraction and liquid chromatography-mass spectrometry. J Chromat A 864, 17-24. 

A large number of monocyclic derivatives from 4-tert-butylhenol, 4-tert-octylphenol and 4-nonylphenol result by formal electrophilic substitution. Rather uniquely, as mentioned earlier, reaction with formaldehyde can be effected under either acidic or alkaline conditions (ref.55). From the initial monocyclic hydroxymethyl intermediate the products obtained are linear as opposed to cross-linked polymers and due to their lower molecular weight possess oil-solubility.. They have been extensively empoyed in surface compositions in conjunction with a triglyceride drying oil. 

Bis-phenol monosulphides and disulphides resulting from the reaction of 4-alkylphenols writh sulphur monochloride and with sulphur dichloride are of importance in the form of their calcium, barium, magnesium salts as lubricating oil additives although their place has been partly displaced by the alkoxyphosphorodithioates. Thus 4-tert-nonylphenol and 4-tert-octylphenol, afford 2,2 -thiobis products (R = t-CgHig and t-CgHi repectively (ref. 82). 

Liu J-F, Liang X, Jiang G-B, Cai Y-Q, Zhou Q-X, Liu G-G. High performance liquid chromatography determination of 4-nonylphenol, 4-tert-octylphenol, and their short ethoxyl chain polyethoxylates in water samples using a microporous membrane liquid-liquid extraction sample pretreatment technique. J Sep Sci 2003 26 823-828. 

Kawaguchi, M. Takabashi, S. Seshimo, F. Sakui, N. Okanouchi, N. Ito, R. Inoue, K. Yoshimura, Y. Izumi, S. Makino, T. Nakazawa, H. Determination of 4-tert-octylphenol and 4-nonylphenol in laboratory animal feed sample by stir bar sorptive extraction followed by bquid desorption and column-switching bquid chromatography-mass spectrometry with sobd-phase extraction. J. Chromatogr. A, 2004,1046, 83-88. 

Alkylation of phenol with diisolbutylene produces 4-tert-octylphenol. It is used in the manufacture of specialty surfactants and resins and compounds also for rubber industry tackifiers and ultraviolet (UV) stabilizers. It is available in either flaked or molten form and generally sold in 25 kg bags, bulk shipments of 5000 gallon tank wagons, or up to 25,000 gallon railcars [1, pp. 136-138 2] (Structure 3.4). 

Cai, Y. Jiang, G. liu, J. Zhou, Q. (2003a). Multi walled carbon nanotubes as a solid-phase extraction adsorbent for the determination of bisphenol a, 4-n-nonylphenol, and 4-tert-octylphenol. Analytical Chemistry, 75, 2517-2521. 

The usable concentration of it in LDPE films varies, depending on the service life required and on the thiek-ness of the film. For example, with 0.25% [2,2 -thio-bis(4-tert-octylphenolate)]n-butyl-nickel and 0.25% 2-hydroxy-4-octyloxybenzophenone in 150-200 pm thick films, an outdoor lifetime of two years is obtained in a temperate climate, whereas a larger lifetime may be achieved with a higher concentration of stabilizers. 

Kawaguchi M, Inoue K, Sakui N et al (2004) Stir bar sorptive extraction and thermal desorption-gas chromatography-mass spectrometry for the measurement of 4-nonylphenol and 4-tert-octylphenol in human biological samples. J Chromatogr B Analyt Technol Biomed Life Sci 799(1) 119-125... 

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