Symposium on Fundamental Chemical Thermodynamics of Hydrocarbons and their Derivatives: Heat of Formation of Gaseous Hydrocarbons.

Heats of combustion and formation of the paraffin hydrocarbons at 25 degrees C

“…The values deduced from references [2,3] are the same as reported indirectly in reference [1], with a small correction for the molecular WeIght of water (since in these experiments, the mass of water formed in the combustion was used to determine the amount of r eaction) and also with a slight change in conversion to zero pressure.…”

“…Heats of combustion of methane, ethane, propane, n-butane, isobutane, and n-pentane, each in the gaseous state, by Rossini [1,2,3,24].…”

“…Heats of combustion of isopentane and neopentane (tetramethylmethane), in the gaseous state, by Knowlton and Rossini [1,4].…”

“…The values of heats of combustion given in table 2 for methane, ethane, propane, and n-butane, in the gaseous state, are the same as in table 1. The value for gaseous n-pentane is taken as the weighted mean of the values from [3] and [6].…”

“…In 1940, values were presented by this Bureau for the heats of format.ion of the paraffin hydrocarbons from methane through the pentanes, in the gaseous state [1). 2 Since then, a considerable amount of new data has become available, which makes possible the extension of these values to all the isomers of the hexanes, heptanes, and octanes, and to the higher normal paraffins, each in both the liquid and gaseous states.…”