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A gaseous hydrocarbon, C2H6, forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl.

A colorless gas, CH3Cl, of a sweet odor, easily condensed to a liquid; -- called also methyl chloride.

A white crystalline substance forming the ethyl salt of malamic acid.

, colorless, gaseous, inflammable hydrocarbon, CH4; marsh gas. See Marsh gas, under Gas. Methane series (Chem.), a series of saturated hydrocarbons, of which methane is the first member and type, and (because of their general chemical inertness and indifference) called also the paraffin (little affinity) series. The li…

A nitro derivative of methane obtained as a mobile liquid; -- called also nitrocarbol.

Ethyl oxamate, obtained as a white scaly crystalline powder.

icine as a hypnotic. By extension, any one of the series of related substances of which urethane proper is the type.

the amido compounds are derivatives of ammonia, and the hydrocarbons are derivatives of methane, benzene, etc.

Ethane; -- sometimes so called because regarded as consisting of two methyl radicals. See Ethane.

tomic, hydrocarbon radical, C2H5 of the paraffin series, forming the essential radical of ethane, and of common alcohol and ether. Ethyl aldehyde. (Chem.) See Aldehyde.

is a strong base, and is a derivative of ammonia. Called also ethyl carbamine, and amido ethane.

Chem.), the series of the paraffine hydrocarbons and their derivatives; the marsh gas or methane series. -- Natural fats (Chem.), the group of oily substances of natural occurrence, as butter, lard, tallow, etc., as distinguished from certain fatlike substance of artificial production, as paraffin. Most natural fats a…

n derivatives of the same substance, or of the analogous members of different series; as, ethane, ethyl alcohol, acetic aldehyde, and acetic acid are in heterology with each other, though each in at the same time a member of a distinct homologous series. Cf. Homology.

attended by a regular variation in physical properties; as, there is an homology between methane, CH4, ethane, C2H6, propane, C3H8, etc., all members of the paraffin series. In an extended sense, the term is applied to the relation between chemical elements of the same group; as, chlorine, bromine, and iodine are said…

A compound containing only hydrogen and carbon, as methane, benzene, etc.; also, by extension, any of their derivatives. Hydrocarbon burner, furnace, stove, a burner, furnace, or stove with which liquid fuel, as petroleum, is used.

tion; -- said specifically of groups or series which differ by a constant difference; as, ethane, ethylene, an acetylene, or their analogous compounds, form an isologous series.

lation and purification of petroleum. It consists chiefly of several hydrocarbons of the methane series.

spermaceti as an ethereal salt of several fatty acids, and regarded as an alcohol of the methane series.

An instrument, resembling a eudiometer, to detect the presence and amount of methane, as in coal mines.

Of, pertaining to, or designating, a sulphonic (thionic) acid derivative of methane, obtained as a stable white crystalline substance, CH2.(SO3H)2, which forms well defined salts.