para-dichlorobenzene

(redirected from 1,4-Dichlorobenzene)
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par•a-di•chlo•ro•ben•zene

(ˌpær ə daɪˌklɔr əˈbɛn zin, -bɛnˈzin, -ˌkloʊr-)

n.
a white, crystalline, volatile solid, C6H4Cl2, of the benzene series: used chiefly as a moth repellent.
[1875–80]
References in periodicals archive ?
One suspect EOA [formula: C6H4Cl2O, RT: 4.07, matched chemicals: 1,4-Dichlorobenzene metabolite, 2,3-Dichlorophenol (2,3-DCP), 2,4-DCP, 2,5-DCP, 2,6-DCP, or 3,4-DCP)] showed a difference in DF by all three demographic variables.
Chlorobenzenes (ClB) represent a halogenated aromatic hydrocarbon group, of which 1,4-dichlorobenzene (dClB) is known as an international reference compound due to its ecotoxicological and human toxicity potential [27].
The aim of this study was to provide more evidences for potential mechanisms of [H.sub.2]S-related mitigation of developmental inhibition caused by the organic pollutant, 1,4-dichlorobenzene (1,4-DCB).
Vinylchloride (highly toxic, flammable, and carcinogenic organochloride, important monomer) and its precursor, 1,2-dichloroethane, as well as naphthalene, chloroethane, and 1,4-dichlorobenzene appearing in source A, suggest local manufacturing of polymer materials, including the polyvinyl chloride (PVC), specialty polymers such as synthetic textile fibers, dyes, and possibly organo-aluminum compounds [1,44].
Case studies are provided on the ecotoxicological concerns and regulatory status of four specific chemicals: orthonitrochlorobenzene, 1,4-dichlorobenzene, hexachlorobenzene, and microbeads.
([dagger]) Anthracene, chlorpyrifos, diazinon, isopropylbenzene, 2,6-dimethylnaphthalene, 1,4-dichlorobenzene, bromacil, 3-t-butyl-4-hydroxyanisole, isopropylbenzene, 4-cumylphenol, and 4-n-octylphenol were not detected in samples.
In the case of bulk structure (Scheme 1(a)), dried CdS-n powder was blended with P3HT solution in 1,4-dichlorobenzene (DCB).
Decreased hepatic CAT activities was noted in Anguilla Anguilla pre-exposed to beta-naphthoflavone [2], in goldfish during chronic exposure to 2,4 dichlorophenol [66] and in Jenynsia multidentata exposed to 1,2- and 1,4-dichlorobenzene [31].
Roberts, "Suppression of hepatocyte apoptosis and induction of DNA synthesis by the rat and mouse hepatocarcinogen diethylhexylphlathate (DEHP) and the mouse hepatocarcinogen 1,4-dichlorobenzene (DCB)," Archives of Toxicology, vol.
Among the monitored compounds, benzene, toluene, tetrachlorethylene, and 1,4-dichlorobenzene are the compounds having the UR estimated value.
UDE [[mu]DALYS / Chronic year*person * Standard Compound [[m.sup.3]/[mu]g] [[m.sup.3]/[mu]g] Priority Pollutants 1,3 Butadiene 0.02 0.06 1,4-dichlorobenzene 0.03 0.91 Acetaldehyde 0.3 3.7 Acrolein 190 0.02 Benzene 0.08 0.34 Formaldehyde 6.8 1.7 Naphthalene 0.47 0.29 Nitrogen Dioxide 0.7 40 [PM.sub.2.5] 500 15 Other contaminants Ammonia 0.23 200 Ozone 1.4 147 Crotonaldehyde 1.02 N/A Chronic Standard damage [[mu]DALYS / Compound year*person] Priority Pollutants 1,3 Butadiene 0.001 1,4-dichlorobenzene 0.024 Acetaldehyde 0.96 Acrolein 3.7 Benzene 0.025 Formaldehyde 11.4 Naphthalene 0.14 Nitrogen Dioxide 27 [PM.sub.2.5] 7,500 Other contaminants Ammonia 46 Ozone 200 Crotonaldehyde N/A
Because it is highly flammable, toxic and carcinogenic (IARC, 2002), naphthalene was replaced by 1,4-dichlorobenzene in mothball production; even then, mothballs should never be stored in places accessible to children or pets.