Organic hydrocarbons

Nitromethane Acids, alkylmetal halides, hydroxides, hydrocarbons, organic amines, formaldehyde, nitric acid, perchlorates... 

Synthetic oils have been classified by ASTM into synthetic hydrocarbons, organic esters, others, and blends. Synthetic oils may contain the following compounds diaLkylben2enes, poly(a-olefins) polyisobutylene, cycloaUphatics, dibasic acid esters, polyol esters, phosphate esters, siUcate esters, polyglycols, polyphenyl ethers, siUcones, chlorofluorocarbon polymers, and perfluoroalkyl polyethers. 

HYDROCARBONS Organic compounds that contain only hydrogen and carbon. The major sources of hydrocarbons in the atmosphere are vehicle emissions (unburned fuel) and gas leaks. Contributes to acid rain. 

Volatile organic compounds (VOCs) include organic compounds with appreciable vapor pressure. They make up a major class of air pollutants.I his class includes not only pure hydrocarbons but also partially oxidized hydrocarbons (organic acids, aldehydes, ketones), as well as organics containing chlorine, sulfur, nitrogen, or other atoms in the molecule. 

Film coefficients for turbulent flow that exist on the outside or shell side of the conventional baffled shell and tube exchanger are correlated for hydrocarbons, organic compounds, water, aqueous solutions, and gases by... 

The austenitic irons are superior to ordinary cast iron in their resistance to corrosion by a wide range of concentrations of hydrochloric acid at room temperature (Table 3.50). However, for practical uses where such factors as velocity, aeration and elevated temperatures have to be considered, the austenitic irons are mostly used in environments where the hydrochloric acid concentration is less than 0- 5%. Such environments occur in process streams encountered in the production and handling of chlorinated hydrocarbons, organic chlorides and chlorinated rubbers. 

Central nervous system Nicotine, strychnine, arsenic, halogenated hydrocarbons, organic phosphates, dinitro-phenols, fluoroacetate (1080)... 

The Babylonians and Assyrians cemented stone slabs as well as bricks with bitumen (which is sometimes also referred to as asphalt), a mixture of a black or brown natural organic material with a pitchy luster and comminuted mineral. Bitumen is a thermoplastic solid material when heated above 50°C, it softens and becomes a thick, viscous liquid that reverts to a solid on cooling. It is composed of a natural mixture of hydrocarbons (organic substances composed of carbon, hydrogen, and oxygen) that occurs in natural... 

Nitrogen triiodide a-Nitroguanidine Nitromethane Acids, bromine, chlorine, hydrogen sulfide, ozone Complex salts of mercury and silver Acids, alkylmetal halides, hydroxides, hydrocarbons, organic amines, formaldehyde, nitric acid, perchlorates... 

TAREX A process for destroying hydrocarbons, organic wastes, and hydrogen chloride by controlled combustion in a special combustion chamber which can withstand sudden pressure surges. Engineered by KEU Energie- -Umwelttechnik, Germany. 

Unlike petroleum hydrocarbons, organic compounds in general followed a different evolutionary path. Chlorinated solvents are a common group of organic compounds, and are also the most frequently encountered contaminant in groundwater. Common industrial chemicals that are characterized as chlorinated solvents include trichloro-ethene (TCE), 1,1,1-trichloroethane (TCA), tetrachloroethene (PCE) or perchloro-ethylene, chlorofluorocarbon (Freon)-113 (i.e., 1,1,2-trichloroethane or 1,2,2-tri-fluoroethane), and methylene chloride. In 1997, the EPA reported the presence of TCE and PCE in 852 of 945 groundwater supply systems throughout the United States and in 771 of 1420 Superfund sites. 

Combustion reactions are redox reactions in which the chemical species rapidly combines with oxygen and usually emits heat and light. Reactions of this type are extremely important in our society as the sources of heat energy. Complete combustion of carbon yields carbon dioxide, and complete combustion of hydrogen yields water. The complete combustion of hydrocarbons, organic compounds containing only carbon and hydrogen, yields carbon dioxide and water ... 

Polycarbonates are attacked by aldehydes, ketones, esters, ethers, aromatic and halo-genated hydrocarbons, organic and mineral concentrated acids, concentrated bases, amines, phenols. 

Hydrocarbons Organic compounds composed enUrely of carbon and hydrogen atoms. 

Uses Production of isooctane, butyl rubber, polyisobutene resins, high octane aviation fuels, tert-butyl chloride, ferf-butyl methacrylates copolymer resins with acrylonitrile, butadiene, and other unsaturated hydrocarbons organic synthesis. 

The Natural Hydrocarbons.—Organic chemistry of a very complex kind is involved in the formation and alteration of natural gas and petroleum, and many problems of physics and physical chemistry, such as adsorption, surface tension, and collpid phenomena, are also involved in their underground storage and movements. 

Natural gas feedstock is very dependent of the source location in some cases it has high levels of H2S, CO2 and hydrocarbons. Organic sulfur compounds must be removed because they will irreversibly deactivate both reforming and WGS catalysts. Hence a preliminary feed desulfurization step is necessary. This process consists in a medium-pressure hydrogenation (usually on a cobalt-molybdenum catalyst at 290-370 °C), which reduces sulfur compounds to H2S, followed by H2S separation through ZnO adsorption (at 340-390 °C) or amine absorption [9]. 

The technology has successfully treated groundwater contaminated with a number of organic compounds including petroleum hydrocarbons, organic solvents, creosote, and pentachlorophe-nol. 

Particulate carbon in the atmosphere exists predominantly in three forms elemental carbon (soot) with attached hydrocarbons organic compounds and carbonates. Carbonaceous urban fine particles are composed mainly of elemental and organic carbon. These particles can be emitted into the air directly in the particulate state or condense rapidly after Introduction into the atmosphere from an emission source (primary aerosol). Alternatively, they can be formed in the atmosphere by chemical reactions involving gaseous pollutant precursors (secondary aerosol). The rates of formation of secondary carbonaceous aerosol and the details of the formation mechanisms are not well understood. However, an even more fundamental controversy exists regarding... 

Aliphatic Hydrocarbon organic hydrocarbons characterized by a straight chain of carbon atoms... 

A study of the origin of petroleum requires analytical capabilities for many compounds including hydrocarbons organic acids... 

Bingham. E., B. Cohrssen. and C. Powell Patty s Toxicology, Hydrocarbons—Organic Nitrogen Compounds. Vol 4, 5th Edition, John Wiley Sons, Inc., New Yoik, NY, 2000. 

Hydrocarbon Organic compounds mostly or entirely consisting of carbon and hydrogen. Hydrocarbons are used as fuels and to manufacture plastics, medicines, and other products (compare with petroleum, oil, and natural gas). 

Compounds Hydrocarbons, organic compounds containing heteroatoms (O, N)... 

Hydrocarbons Organic compounds of hydrogen and carbon. Mixtures including various hydrocarbons include crude oil, natural gas, natural gas condensate and methane. 

Squalane 20 100 N Pent 0 0 0 0 0 For hydrocarbons, organic vapors, nitrogen, sulfur and phosphorus compounds... 

Note Nonpolar solvent soluble in alcohols, hydrocarbons, organic halides, acetone, and ethers insoluble in water flammable moderately toxic by inhalation and ingestion incompatible with strong oxidizers. Synonyms hexane, hexyl hydride. 

Saturated hydrocarbons < olefins < aromatic hydrocarbons = organic halides < sulfides < ethers < nitro compounds < esters = aldehydes = ketones < alcohols = amines < sulfones < amides < carboxylic acids... 

By using a (homogeneous) metallocene catalyst that is soluble in hydrocarbons, organic and inorganic particles (starches, cellulose, quartz grains, and metal powder) can be uniformly covered, and in the subsequent polymerization they can be coated with a film of polyolefins of variable thickness. 

Branched hydrocarbons organic compounds that contain only carbon and hydrogen in... 

Alkanes are hydrocarbon molecules that are joined by single covalent bonds. They are the simplest hydrocarbons. Methane, CH4, is the simplest alkane. It is the main component of natural gas. Alkanes are aliphatic hydrocarbons organic compounds in which carbon atoms form chains... 

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