Topic
Aromatic hydrocarbon
About: Aromatic hydrocarbon is a research topic. Over the lifetime, 5814 publications have been published within this topic receiving 55499 citations. The topic is also known as: arene & arenes.
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Patent•
13 Apr 1999
TL;DR: In this article, the authors used a polar solvent to extract polycyclic aromatic hydrocarbons (PAHs), which are toxic to the human body, from a mineral oil mixture.
Abstract: The processing oil contains polycyclic aromatic hydrocarbon, which is a substance known to be toxic to the human body, in an amount of less than 3 wt% and an aromatic hydrocarbon in an amount of 25 wt% or more, and has a kinematic viscosity at 100°C of 10-30 mm2/s, a density of 0870-970 g/cm3, and a 5 vol% recovery temperature of 370-530°C The processing oil exhibits excellent performance which has conventionally been obtained The processing oil can be produced by a method in which oil mixture comprising an extract obtained through extraction from mineral oil by use of a polar solvent in an amount of 40-97 vol% and lubricating base oil in an amount of 3-60 vol% is subjected to extraction treatment by use of a polar solvent
22 citations
TL;DR: The correlation between Ah receptor affinity and tumor-promoting properties of the tested aromatic amines is only limited, but the results are not at variance with the concept of a receptor-mediated process in 2-AAF tumor promotion.
Abstract: The aromatic amides 2-acetylaminofluorene (2-AAF), its isomer 4-acetylaminofluorene, 2-acetylaminophenanthrene (AAP), trans-4-acetylaminostilbene (AAS) and the corresponding amines differ in their carcinogenic effects in the rat. Only 2-AAF and 2-aminofluorene (2-AF) are tumor promoters in rat liver. We have determined the competitive binding affinities of these compounds to the rat hepatic cytosolic aromatic hydrocarbon (Ah) receptor, which has been associated with tumor promotion. Binding affinity was determined by displacement of labelled 2,3,7,8-tetrachloro-dibenzo-p-dioxin (TCDD) or 3-methylcholanthrene. The rank order of affinities and the apparent inhibitor constants measured with the sucrose density gradient centrifugation technique were: AAF (2.3 microM) greater than AAP (2.7 microM) greater than 2-AF (7.0 microM) greater than trans-4-aminostilbene (7.7 microM) greater than 2-aminophen-anthrene (10.4 microM). 4-Acetylaminofluorene, 4-aminofluorene and AAS did not displace TCDD from the receptor protein. A number of other fluorene derivatives did not bind, except 2-nitrofluorene (apparent inhibitor constant (1.4 microM). The in vivo biological potency of the aromatic amines was monitored by measuring the induction of ethoxy-resorufin-O-deethylase (EROD) and aromatic hydrocarbon hydroxylase activities. In vitro binding to the Ah receptor correlates roughly with the induction of EROD activity. The effect of 2-AAF was dose dependent, supporting a receptor-mediated mechanism. The correlation between Ah receptor affinity and tumor-promoting properties of the tested aromatic amines is only limited, but the results are not at variance with the concept of a receptor-mediated process in 2-AAF tumor promotion.
22 citations
TL;DR: In this paper, the toxicity of two pairs of undegraded and moderately biodegraded crude oils from the Santa Maria basin (California) and the Vienna basin (Austria), all dominated by unresolved complex mixtures, were studied regarding their composition and toxicity towards the feeding rate of the marine mussel Mytilus edulis.
22 citations
Patent•
05 Mar 2008TL;DR: In this paper, the reduction potential of a polymer having a repeating unit represented by the general formula (I) below and a reduction potential based on ferrocene as measured by cyclic voltammetry of from -1.5 V to -0.5V was shown.
Abstract: Disclosed is a polymer having a repeating unit represented by the general formula (I) below and a reduction potential based on ferrocene as measured by cyclic voltammetry of from -1.5 V to -0.5 V. In the formula, Ar1 represents a divalent aromatic hydrocarbon group or a divalent heterocyclic group. (These groups may be substituted by a substituent.)
22 citations
TL;DR: In this article, the molecular interactions contributing to the excess enthalpy of an aliphatic ketone + an aromatic hydrocarbon are made on the basis of these results, and the first three mixed exothermically while the last four mixed endothermally.
22 citations