Chemical hydrocarbons

Synthesis Gas Chemicals. Hydrocarbons are used to generate synthesis gas, a mixture of carbon monoxide and hydrogen, for conversion to other chemicals. The primary chemical made from synthesis gas is methanol, though acetic acid and acetic anhydride are also made by this route. Carbon monoxide (qv) is produced by partial oxidation of hydrocarbons or by the catalytic steam reforming of natural gas. About 96% of synthesis gas is made by steam reforming, followed by the water gas shift reaction to give the desired H2 /CO ratio. 

Vrednye khimichesldye veshchestva. Uglevodorody, galogenoproizvodnye uglevodorodov (Harmful Chemicals. Hydrocarbons and Hydrocarbon Halogen Derivatives) / Ed. V.A. Filov. Leningrad Khimiya, 1990. 733 pp. 

Aliphatic-carboxylic herbicides, 13 324 Aliphatic chemicals, hydrocarbon use in, 13 687... 

Structural Theory — Chemical Bonding — Naming Organic Chemicals—Hydrocarbons—Homologous Series Alkanes 12... 

For chemicals with log K v values between 6 and 8, BCF values of non-polar chemicals (hydrocarbons and halogenated hydrocarbons) should be estimated using one of the rectilinear log BCF-log Kow QSARs such as that of Veith and Kosian (1983). BCFWIN should be used for polar chemicals with log Kow values in this range. It should also be used for all chemicals with log Kow values > 8. If measured log K, v values are not available, it is recommended that a consensus value be used, being the average of two to three calculated values (e.g., KOWWIN, ClogP [www.biobyte.com], ChemSilico [www.logp.com]). 

Raimbault, C. Bonnifay, P. Cha, B. Andrews, J. "Propylene Dimer Fuel or Chemical" Hydrocarbon Processing, (April, 1976)... 

All reagents were reagent-grade chemicals. Hydrocarbon solvents were dried over sodium wire. TMEDA was dried over sodium wire and then distilled under reduced pressure. TED was tried under vacuum to the point of sublimation. Liquid tertiary amines and diamines were... 

It is ironic that while most modern cleaning products remove surface dirt and sometimes germs, they also make the air and surfaces dirty with industrial chemicals, hydrocarbons, chlorine, and more. But what could green cleaning possibly have to offer that would compete with today s modern formulations ... 

VertMarkets A variety of industry specific websites serving as virtual mall communities, including chemicals, hydrocarbons, packaging and more. A very extensive one is oriented to the adhesives and sealants industry, with news, product information, and much more, http llwww.adhesivesandsealants.com http. jjwww. vertmarkets.com... 

PES has excellent resistance to aliphatic hydrocarbons, some chlorinated hydrocarbons, and aromatics. It is also resistant to most inorganic chemicals. Hydrocarbons and mineral oils, greases, and transmission fluids have no effect on PES. 

Unexpected releases of toxic, reactive, or flammable liquids and gases in processes facilities involving highly hazardous chemicals/hydrocarbons have been reported for many years. Regardless of the industry, there is a potential for an accidental and undesirable release of these substances if they not are not properly handled and controlled. This, in turn, creates the possibility of disaster at any or all fronts of HSE issues, and hence creates strong reason to control them. 

Meyers, R.A, Desulfurize Coal Chemically. Hydrocarbon Processing 54(6) (June 1975) 93-95. 

Many studies were carried out for the pyrolysis treatment of residues obtained from particular sectors, such as auto-motive " and electronic industries.Because pyrolysis involves the thermal degradation of plastic materials in the absence of air, it could yield valuable hydrocarbon products, while at the same time facihtating the recovery of the metal components. Pyrolysis would facihtate the recovery of both chemical hydrocarbons and metals embedded or mixed with... 

The most common and widespread anthropogenic pollutants currently emitted are sulfur dioxide (SO2), nitrogen oxides (NO ,), carbon monoxide (CO), carbon dioxide (CO2), volatile organic chemicals (hydrocarbons), particulates, lead, and a variety of toxic chemicals. Table 9.7 lists important air... 

A basic chemical hydrocarbon based on a single or multiple benzene rings (C6H6). Some of the more common aromatics include benzene, toluene, xylene, and phenol. They exhibit a somewhat sweet, yet sickly odor. The term aromatic was assigned before the physical mechanism determining aromaticity was discovered, and was derived from the fact that many of the compounds have a sweet scent. They will burn with a sooty yellow flame because of the high carbon-hydrogen ratio. 

A basic chemical hydrocarbon such as ethylene, containing one or more pairs of carbon atoms linked by a double bond. Olefins, which might be considered an archaic synonym that is widely used in the petrochemical industry, are also referred to as alkenes. The two most important alkenes/ olefins are ethylene and propylene, as they form the backbone of the petrochemicals market. The highly reactive double bond makes the olefin molecule ideal for conversion to many useful end products. The majority of olefins capacity is consumed in the production of polymers used for plastics (i.e., polyethylene and polypropylene). Ethylene dichloride, ethylene oxide, propylene oxide, oxo alcohol, polystyrene, and acrylonitrile are other important olefins-based petrochemicals. 

Sensitivity Towards Chemicals. The polymer may be sensitive to some chemicals (hydrocarbons, dehydration solvents such as glycols) or even water when in excess. For instance, the presence of excess liquid water can lead to the collapse of dried cellulose acetate membranes. That is why a pre-treatment of natural gas, such as a dew-pointing operation, is sometimes required before a membrane-based carbon dioxide removal operation. 

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