A Raman Spectroscopic Comparison Of Xylene Isomers: Meta-Xylene, Ortho-Xylene And Para-Xylene

Raman spectroscopic analysis is an ideal method for identifying chemical samples and even distinguishing isomers of the same chemical. Ocean Optics offers many options of ready to use Raman systems with different resolution, sensitivity and laser wavelength options, including a low-resolution hand held device and desktop units.

To illustrate the capabilities of   our Raman equipment, we analyzed xylene and its three isomers (meta-, ortho- and para-xylene).Each of these three designations refers to a specific location that the two methyl groups are attached to the benzenering. Typically these isomers are found in technical grade xylene (mixture) in the proportions of 45-55% m-xylene and approximately 20% of each of the p-ando- xylene, with the remainder consisting of ethyl benzene.

Xylene is one of the most widely used chemicals. It is used as a solvent in vast industries, from leather and printing to rubber and plastic. It is also used for cleaning steel, as a paint thinner, and can be found in gasoline and airplane fuel.