| Among the 4800 constituents of tobacco smoke, researchers have identified more than 100 alkanes, 150 alkenes and 55 alicyclic hydrocarbons. |
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| Carbon in its most reduced form is found in alkanes, which are typically fuels like methane, propane, and octane. |
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| Stereochemical isomers are also possible with the alkanes, beginning with heptane. |
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| The alkanes are very poorly soluble in water but are soluble with many of the other organic solvents such as chloroform and benzene. |
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| By careful use of appropriate conditions and catalysts alkanes can be converted into other hydrocarbons such as the alkenes and alkynes. |
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| Paraffin waxes are mixtures of high molecular weight alkanes, and therefore are not esters. |
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| Furthermore, there was no evidence of ethyl esters, dimers, alkanes or alkenes, which might be expected for an oxidative reaction. |
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| The cycloalkanes are saturated hydrocarbons like the alkanes, but form rings with two hydrogen atoms per carbon. |
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| The samples showed high concentrations of methane, ethane, butane, and propane, gases in a class of hydrocarbons called alkanes. |
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| In particular, the formation of branched alkanes increases the octane number and combustibility of the resulting hydrocarbon. |
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| In some yeast species, peroxisomes may be induced by growth on methanol, alkanes, fatty acids, and cadmium. |
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| The ethyl group is found for example during the thermal degradation of alkanes as is encountered during various petrochemical processes. |
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| In discussing the alkanes as a functional group, the terms aliphatic and alicyclic are used. |
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| The chain length of the alkanes varies between about 10 and 18 carbon atoms. |
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| Due to the presence of a ring, cycloalkanes have two less H atoms than open-chain alkanes in order to satisfy the valence electron rule. |
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| Aliphatic hydrocarbons such as alkanes, isoparaffins and alkenes are the major components of gasoline. |
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| Codexis's enzymes and bacteria can turn sugar into molecules called straight-chain alkanes which have between 12 and 16 carbon atoms in them. |
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| Technically, it is not ordinary diesel, either: in chemist-speak, it is an isoprenoid rather than a mixture of alkanes and aromatics. |
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| Chlorinated paraffins are chemical substances manufactured from the chlorination of straight chain paraffins or alkanes. |
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| It is a mixture of millions of compounds that include alkanes, alkylated aromatic rings, and substituted fused aromatic ring structures. |
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| Some of these hydrocarbons are alkanes, the proportion depending on the origin of the crude oil. |
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| The affinity between alkanes becomes greater than the affinity between the alkanes and the solvents. |
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| Highly chlorinated alkanes, with carbon chain length greater than 20, are waxy solids at ambient temperatures. |
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| This method of production is still used although oxidation of methane, pyrolysis of alkanes, and cracking of hydrocarbons are more commonly encountered. |
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| They include nitrogen dioxide, formaldehyde, and a wide range of alkanes, cycloalkanes, terpenes, aromatic compounds, and hydrocarbons. |
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| At lower temperatures the clearly defined components included mainly alkanes, oxygen-containing compounds and some heteroatomic compounds. |
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| The equilibrium of the alkanes in the rumen was achieved within seven days according to the product instruction. |
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| Other topics covered include oxidation of olefins and alkanes, asymmetric synthesis, and the catalytic behavior of particular metalloenzymes. |
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| This mixed culture was chosen because it was acclimated to degradation of chlorinated alkanes and alcohols and, therefore, considered to be active on fluorinated alcohols. |
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| These samples include several novel, sulfidogenic pure cultures which degrade alkanes, toluene, and tribromophenol. |
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| Cycloalkanes have similar properties to alkanes but have higher boiling points. |
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| The phase-change material is a mixture of alkanes, including paraffins, waxes, fatty alcohols, and fatty acids. |
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| As in simpler alkanes, carbon in the CFCs bonds with tetrahedral symmetry. |
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| The densities of CFCs are higher than their corresponding alkanes. |
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| The C6 through C10 alkanes, alkenes and isomeric cycloalkanes are the top components of gasoline, naphtha, jet fuel and specialized industrial solvent mixtures. |
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| In general they are volatile, but less so than their parent alkanes. |
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| Organisms capable of utilizing benzene, toluene, ethylbenzene, xylenes, alkanes, and polycyclic aromatic hydrocarbons have been isolated and described. |
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| Alkanes have only single bonds, while alkenes have a carbon-carbon double bond, and alkynes have a carbon-carbon triple bond. |
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| Alkanes with more than 16 carbon atoms can be refined into fuel oil and lubricating oil. |
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