Halogenated hydrocarbons vinyl chloride

Reference methods for criteria (19) and hazardous (20) poUutants estabHshed by the US EPA include sulfur dioxide [7446-09-5] by the West-Gaeke method carbon monoxide [630-08-0] by nondispersive infrared analysis ozone [10028-15-6] and nitrogen dioxide [10102-44-0] by chemiluminescence (qv) and hydrocarbons by gas chromatography coupled with flame-ionization detection. Gas chromatography coupled with a suitable detector can also be used to measure ambient concentrations of vinyl chloride monomer [75-01-4], halogenated hydrocarbons and aromatics, and polyacrylonitrile [25014-41-9] (21-22) (see Chromatography Trace and residue analysis). 

The technology is applicable to chlorinated and nonchlorinated VOCs methyl tertiary butyl ether (MTBE) dichloroethylene (DCE), trichloroethylene (TCE), and tetrachloroethylene (per-chloroethylene, PCE) dichloroethane (DCA) vinyl chloride alcohols ethers ketones and halogenated and nonhalogenated paraffinic, olefinic, aliphatic, and aromatic hydrocarbons. It is very effective at treating benzene, toluene, ethylbenzene, and xylene (BTEX) compounds and any oxygenate, such as acetone or isopropanol. 

Researchers believe that the PSVE technology can be used to remove volatile organic compounds (VOCs), halogenated volatile organic compounds (HVOCs), and total petroleum hydrocarbons (TPH). Some chemicals treated with PSVE include carbon tetrachloride, vinyl chloride (VC), chlorobenzene, 1,1-dichloroethane, dichloroethene (DCE), trichloroethane (TCA), and benzene, toluene, ethylbenzene, and xylene (BTEX). 

Vinyl Chloride A halogenated hydrocarbon compound used to produce polyvinyl chloride. 

Albertini R, Clewell H, Himmelstein MW, et al. (2003) The use of non-tumor data in cancer risk assessment Reflections on butadiene, vinyl chloride, and benzene. Regulatory Toxicology and Pharmacology 37 105-132. Lemen RA (2001) Unsaturated Halogenated Hydrocarbons. In Bingham E, Cohrssen B, and Powell CH (eds.) Patty s Toxicology, 5th edn., vol. 2, pp. 247-255. New York Wiley. 

Halogenated hydrocarbons (e.g., vinyl chloride and ethylene dibromide)... 

Gustorf and co-workers (264-266) have prepared complexes of the type (7r-CH2=CHX)Fe(CO)4 [X = OCOCH3 (266), Cl, CH3, CeHs, or OCH3 (265)] by irradiation of Fe(CO)5 with the corresponding olefin. The complexes are very oxygen-sensitive and thermally unstable. At room temperature they decompose to yield the olefin and Fe3(CO)i2. The order of thermal stability is vinyl chloride > styrene > propylene > vinyl methyl ether. The vinyl chloride and styrene complexes show catalytic activity for polymerization of methyl methacrylate in the presence of a small amount of halogenated hydrocarbon, e.g., CCI4, at room temperature (265). 

The Hydrpgen Halides The halogens form gaseous hydrogen halides (HX) through direct combination with H2 or through the action of a concentrated acid on the metal halide. Commercially, HCl forms as a by-product during the chlorination of hydrocarbons to form useful materials, such as poly(vinyl chloride). 

Although most of the halogenated hydrocarbons that are commonly used are liquids at ambient temperature and pressure, the low-molecular-weight compounds such as 1,2-difluoroethane, methyl bromide, or vinyl chloride are gases, whereas those of higher molecular weight, such as iodoform or hexachloronaphthalene, are solids. Halogenated hydrocarbons are used as solvents. 

Also aluminum oxide coated ALOT columns can be used for CFC separations. However, the behavior of aluminum oxide depends on the composition of the sample to be aneilyzed. As discussed previously for the separation of vinyl chloride (see Section 7.5.1), there are a number of halogenated hydrocarbons which can decompose on the active aluminum oxide surface. Depending on the type of degradation products formed, the aluminum oxide will be partly deactivated and retention behavior will be difficult to reproduce. Fig. 7-45 shown an analysis of Freon 12 and Freon 11 in a mixture of hydrocarbons. The... 

Vinyl (PVC) - Polyvinyl Chloride has good to excellent resistance to amines and aromatics, inorganic acids, bases and salts. However, this low-cost elastomer has poor resistance to halogenated hydrocarbons, ketones and esters. 

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