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However the higher melting points of these alkanes can cause problems at low temperatures and in polar regions, where the fuel becomes too thick to flow correctly. Mixtures of the normal alkanes are used as boiling point standards for simulated distillation by gas chromatography. [1]
The melting points of the alkanes follow a similar trend to boiling points for the same reason as outlined above. That is, (all other things being equal) the larger the molecule the higher the melting point. However, alkanes' melting points follow a more complex pattern, due to variations in the properties of their solid crystals. [a]
The following is a list of straight-chain alkanes, the total number of isomers of each (including branched chains), and their common names, sorted by number of carbon atoms. [ 1 ] [ 2 ] Number of C atoms
If a compound's vapors are not contained, then some volatile compounds can eventually evaporate away in spite of their higher boiling points. Boiling points of alkanes, alkenes, ethers, halogenoalkanes, aldehydes, ketones, alcohols and carboxylic acids as a function of molar mass. In general, compounds with ionic bonds have high normal boiling ...
Normal boiling points of straight chain alkanes. Within that series, many physical properties such as boiling point gradually change with increasing mass. For example, ethane (C 2 H 6), has a higher boiling point than methane (CH 4).
Boiling point: 125.1 to 126.1 °C; 257.1 to 258.9 °F; 398.2 to 399.2 K ... Octane is a hydrocarbon and an alkane with the chemical formula C 8 H 18, ...
Heptane or n-heptane is the straight-chain alkane with the chemical formula H 3 C(CH 2) 5 CH 3 or C 7 H 16.When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane).
Boiling point: 270.00 °C; 518.00 °F; 543.15 K Solubility in water. 2.866 μg L −1: log P: ... Pentadecane is an alkane hydrocarbon with the chemical formula C 15 ...