دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

carbon and hydrogen compounds that may be branched of straight chained. Aliphatics may be paraffin (saturated) or olefinic (unsaturated).

n pi: hydrocarbons that have a straight chain of carbon atoms. Compare aromatic hydrocarbons.

n: a series of open-chained hydrocarbons. The two major classes are d1e series with saturated bonds and the series with unsaturated bonds.

n pi: hydrocarbons derived from or containing a benzene ring. Many have an odour. Singlering aromatic hydrocarbons are the benzene series (benzene, ethylbenzenes, and toluene). Aromatic hydrocarbons also include naphthalene and anthracene. Compare aliphatic hydrocarbons.

n: the conversion of aliphatic or alicyclic compounds to aromatic hydrocarbons.

n: in commercial transactions, a product meeting GPA specification for commercial butane and, in addition, containing a minimum of 95 liquid volume percent normal butane. Chemicall, normal butane is an aliphatic compound of the paraffin series with the chemical formula C4H10 and all of its carbon atoms joined in a straight chain.

n: a saturated aliphatic hydrocarbon having the formula CnH2n+2 (e.g., methane, CH4;ethane, C2H6). Heavier paraffin hydrocarbons (i.e., C18H38) form a wax-like substance that is called paraffin. These heavier paraffins often accumulate on the walls of tubing and other production equipment, restricting or stopping the flow of the desirable lighter paraffins.

normal or straight carbon chain alkanes with carbon chain lengths of C18+. The alkanes in this range solidify at temperatures from 80oF to over 200oF. Paraffin is amorphous but may appear to have structure in slow growth examples.