Halogens hydrocarbons and

The main synthetic fluids used as special lubricants are esters, polyglycols, silicones, halogenated hydrocarbons and polyphenyl ethers. 

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). 

Aqueous mineral acids react with BF to yield the hydrates of BF or the hydroxyfluoroboric acids, fluoroboric acid, or boric acid. Solution in aqueous alkali gives the soluble salts of the hydroxyfluoroboric acids, fluoroboric acids, or boric acid. Boron trifluoride, slightly soluble in many organic solvents including saturated hydrocarbons (qv), halogenated hydrocarbons, and aromatic compounds, easily polymerizes unsaturated compounds such as butylenes (qv), styrene (qv), or vinyl esters, as well as easily cleaved cycHc molecules such as tetrahydrofuran (see Furan derivatives). Other molecules containing electron-donating atoms such as O, S, N, P, etc, eg, alcohols, acids, amines, phosphines, and ethers, may dissolve BF to produce soluble adducts. 

For esters, alkylbenzenes, halogenated hydrocarbons, and ketones If the hydrocarbon chain has a methyl group in an isoposition, decrease AN by 0.24 and increase AB by 8.93 for each such grouping. For ethers and amines, decrease AN by 0.50 and increase AB by 8.93 for each isogroiip. 

The chemical resistance of PCTFE is good but not as good as that of PTFE. Under certain circumstances substances such as chlorosulphonic acid, molten caustic alkalis and molten alkali metal will adversely affect the material. Alcohols, acids, phenols and aliphatic hydrocarbons have little effect but certain aromatic hydrocarbons, esters, halogenated hydrocarbons and ethers may cause swelling at elevated temperatures. 

Horvath, A. L. "Reference Literature to Solubility Data Between Halogenated Hydrocarbons and Water" ... 

IARC. 1986. lARC monographs on the evaluation of the carcinogenic risk of chemicals to humans. Vol. 41. Some halogenated hydrocarbons and pesticide exposures. World Health Organization, Lyon, France. 

Shikiya J, Tsou G, Kowalski J, et al. 1984. Ambient monitoring of selected halogenated hydrocarbons and in the California South Coast Air Basin. Proceedings of the 77th Annual Meeting of the Air Pollution Control Association, 1-21. 

Kowalski JD, Shikiya JM, Tsou G. 1985b. Ambient sampling and analysis to halogenated hydrocarbons and benzene. Proc APCAAnnu Meet 2 85-17.1,... 

Environmental exposure to chloroform in humans probably represents a combination of inhalation exposure (from the air polluted with volatile halogenated hydrocarbons) and oral exposure (from... 

E. Reduced peripheral vascular resistance occurs with most halogenated hydrocarbons, and reflex tachycardia may be a concern. Halothane may be the clearest exception, since there appears to be a balance between relaxation and constrictor influences in various vascular beds with this agent so that total peripheral resistance changes very little. Halothane is the agent of concern when sensitization of the myocardium to catecholamine-induced arrhythmias may be important, such as during incidences of hypercapnia. Sevoflurane does not directly influence sympathetic function. However, reflex tachycardia can occur. Reflex sympathetic... 

Electrokinetics has been used to mobilize metals and dissolved contaminants to in situ treatment or recovery zones. Electrokinetic transport uses these mechanisms to move bacteria through the subsurface to the contaminated media. The technology can be used to treat organic contaminants that adsorb to aquifer soils including halogenated hydrocarbons and non-aqueous-phase liquids (NAPLs). 

The yellow complex can be stored under nitrogen for months. It is easily dissolved in benzene, ethers, and halogenated hydrocarbons and less easily in aliphatic hydrocarbons. Mp 93-94°. H NMR (TMS, CDC13, 60 MHz) tNCHj... 

Nephrotoxins Hie tenn refers to a specific target organ characterization of effect. Nephrotoxins are chemicals which produce kidney damage. Signs and symptoms are edema and proteinuria. Examples are halogenated hydrocarbons and uranium. 

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