Halogenated hydrocarbons 1,4-dichlorobenzene

At room temperature, HDPE is not soluble in any known solvent, but at a temperature above 80—100°C, most HDPE resins dissolve in some aromatic, aflphatic, and halogenated hydrocarbons. The solvents most frequently used for HDPE dissolution are xylenes, tetralin, decalin 1,2,4-trimethylbenzene, o-dichlorobenzene, and 1,2,4-ttichlorobenzene. 

Because 1,4-dichlorobenzene is a liver toxin, it probably can interact with other chemicals that are liver toxicants. These toxicants are many, and include ethanol, halogenated hydrocarbons (chloroform, carbon tetrachloride, etc ), benzene, and other haloalkanes and haloalkenes. In addition, 1,4-dichlorobenzene toxicity may also be exacerbated by concurrent exposure with acetaminophen, heavy metals (copper, iron, arsenic), aflatoxins, pyrrolizidine alkaloids (from some types of plants), high levels of vitamin A, and hepatitis viruses. Such interactions could either be additive or S5mergistic effects. 

Halogenated Hydrocarbons Carbon Tetrachloride Chlorobenzene Chloroform Dichlorobenzene... 

Halogenated hydrocarbons, such as chlorobenzene, bromo-benzene, o-dichlorobenzene, carbon tetrachloride. 

Xiao et al. ° studied the adsorption of chlorobenzene and 1,3-dichlorobenzene at 313 to 453 K on a wood-based activated carbon, which was prepared by the activation of a char in CO2 at 1073 K. The adsorption isotherms for both the halogenated hydrocarbons are Type 1 of the BET classihcation (Figure 7.6). The amount adsorbed decreased systematically with the increasing temperature. The total volume of the halogenated hydrocarbon adsorbed was equal to the total pore volume of the carbon obtained from nitrogen adsorption at 77 K. The isosteric heats of adsorption of chlorobenzene calculated using the van Hoff isochore was 37 KJ/mol at an adsorption of 1 mmol/g and compared well with the heat of vaporization 35.19 KJ/mol. The adsorption appeared to be physical in nature involving micropores. The kinetics... 

Bentonites also remove compounds from contaminated water which, at first sight, should not interact strongly with smectites. An example are halogenated hydrocarbons (chloroethanes, m-dichlorobenzene and several bromo hydrocarbons) which are irreversibly bound by sodium montmorillonite. (The adsorption on fumed silica is reversible). The irreversibility of the process indicates chemisorption. Certain aromatic halogeno hydrocarbons (2 and 4-bromotoluene and 1,2 dichlorobenzene) are, at least partially, catalytically transformed into higher molecular weight products [71]. 

The metabolism of 1,4-dichlorobenzene could involve the formation of an arene oxide intermediate, as has been proposed to occur in the oxidative metabolism of many halogenated aromatic hydrocarbons (Jerina and Daly 1974). 1,4-Dichlorobenzene has not been shown to be mutagenic in microbial or mammalian systems, a result that may be viewed as further suggestive evidence that an arene oxide intermediate is not involved in its metabolism. 

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