Analysis of Creosote By Infrared Spectroscopy

Infrared spectroscopy was used to obtain analytical data from a number of creosotes that would have been very difficult to obtain by chemical means. A method was devised to distinguish by infrared spectroscopy. pure coke-oven creosote from low-temperature or vertical-retort creosote. Infrared spectroscopy can also be used to detect adulteration of coke-oven creosote with saturated hydrocarbon chains. Spectural differences were detected in creosote extracted from a pair of similarly creosoted panels, one of which was exposed in a harbor and the other which remained on a shelf in the laboratory. Olefins were shown to be present in the saturated hydrocarbon chromatography fraction of a number of creosotes. This is the first report of the presence of olefins in creosote.

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