What's the difference between benzene and paraxylene?
Benzene
Definition:
(n.) A volatile, very inflammable liquid, C6H6, contained in the naphtha produced by the destructive distillation of coal, from which it is separated by fractional distillation. The name is sometimes applied also to the impure commercial product or benzole, and also, but rarely, to a similar mixed product of petroleum.
Example Sentences:
(1) The low affinity of several N1-alkylpyrroleethylamines suggests that the benzene portion of the alpha-methyltryptamines is necessary for significant affinity.
(2) Essential parameters of hepatic functioning in 84 labourers, whose exposition to benzene is differing in assimilation as well as length of time is discussed.--45 persons from the same county without contact to benzene or hepatotoxic agents served as control-group.
(3) In the liver, the major site of benzene metabolism, benzene is converted by a cytochrome P-450-mediated pathway to phenol, the major metabolite, and the secondary metabolites, hydroquinone and catechol.
(4) The significance of the present findings on the mutual suppression of metabolism between benzene and toluene is discussed in relation to solvent toxicology and biological monitoring of exposure to the solvents.
(5) Service station attendants' exposure to benzene, based on 85 TWA results at 7 stations, were well below 1 ppm except one exposure of 2.08 ppm.
(6) For cases where background contamination could not be adequately controlled, the assay was modified for the quantitative determination of labelled benzenes six mass units heavier than natural benzene (benzene-d6 or benzene-13C6).
(7) We have investigated the whole-body dermal penetration of styrene, xylene, toluene, perchloroethylene, benzene, halothane, hexane, and isoflurane in rats and compared the permeability constants with available human studies on vapor penetration.
(8) Numerical and structural chromosome changes in bone marrow cells have been described in subjects with benzene haemopathy.
(9) On the other hand, Sudan III pretreatment suppressed benzene-induced CA at all periods after the benzene injection.
(10) Benzene is the only chemical agent for which strong evidence of leukaemogenesis exists.
(11) 14C-Methylthio-labelled 2-methylthio-4-ethylamino-6-tert-butylamino-sym-triazine (terbutryn), pentachlorothioanisole (PCTA), and 1,4-bis(methylthio)tetrachloro-benzene (bis-MTTCB) and their methylthio-oxidation congeners were reacted with glutathione (GSH) in the presence and absence of immobilized liver microsomal enzymes.
(12) The drug is extracted from buffered plasma at pH 9.0 with benzen.
(13) Laser photolysis techniques have been used to characterize the reactivity of triplet state lipoidal benzophenone derivatives toward fatty acids and glycerides in benzene solution.
(14) In experiments in vitro, neither benzene, toluene nor xylene changed the number of sister-chromatid exchanges (SCEs) or the number of chromosomal aberrations in human lymphocytes.
(15) The compound is extracted from aqueous solution with benzene and cleaned up by liquid chromatography.
(16) In pursuing the study on pyridodiazepinone derivatives, in order to verify the variation of biological activity induced by replacement of the heteroaromatic with an aromatic nucleus and by the introduction of chlorine on the benzene ring, a series of 1-[(dialkylamino)alkyl]-4-phenyl-1,3-dihydro-2H-1,4-benzodiazepin- 2-ones and of 7-chloro-analogues were prepared.
(17) Benzene toluene, styrene, 1,1,1-trichloroethylene, and tetrachloroethylene are taken as examples of solvents showing various toxicokinetic properties.
(18) DAS protected the anion exchange system not only against inhibition by DNFB but also by m-isothiocyanato benzene sulfonic acid.
(19) The m-xylene-adapted microorganisms in the aquifer column degraded toluene, benzaldehyde, benzoate, m-toluylaldehyde, m-toluate, m-cresol, p-cresol, and p-hydroxybenzoate but were unable to metabolize benzene, naphthalene, methylcyclohexane, and 1,3-dimethylcyclohexane.
(20) Anticonvulsant activity and toxicity of 20 arylsuccinimides were quantitatively correlated with the hydrophobic, electronic and steric parameters of the substituents in the benzene ring and at the nitrogen atom.
Paraxylene
Definition:
(n.) A hydrocarbon of the aromatic series obtained as a colorless liquid by the distillation of camphor with zinc chloride. It is one of the three metamers of xylene. Cf. Metamer, and Xylene.
Example Sentences:
(1) We studied the surface hydrophobicity of 88 Acinetobacter baumannii strains of clinical origin, using both salt aggregation and adherence to paraxylene tests.
(2) This incident put the spotlight back on paraxylene (PX) - a benzene-based chemical widely used in plastic bottles and polyester clothing.
(3) Others held banners that spelled out local concerns about the factory, which produces paraxylene (PX) - a benzene-based chemical widely used in plastic bottles and polyester clothing.
(4) The Fujia petrochemical plant has the capacity to produce 700,000 tonnes of paraxylene (PX), a benzene-based chemical widely used in plastic bottles and polyester clothing.
(5) Every year, the refinery would produce 500,000 tonnes of the chemical paraxylene (PX), a suspected carcinogen used in production of polyester, according to the state-run China Daily newspaper.
(6) Every year the refinery would produce 500,000 tons of paraxylene (PX), a carcinogenic chemical used in production of polyester , according to the state-run China Daily newspaper.
(7) Some chanted old revolutionary songs, and others held banners spelling out local concerns about the factory, which produces paraxylene (PX), a benzene-based chemical widely used in plastic bottles and polyester clothing.
(8) In August I attended a thousand-person protest against plans to build a petrochemical refinery and by-product paraxylene (PX) plant just 30km away.