1937/10/01 by John Jacob Fox, A. Martin, A. E. Martin
Chemical Engineering · Environmental Science · #Analytical Chemistry and Sensors #Water Quality Monitoring and Analysis
paper · doi:10.1098/rspa.1937.0192
Abstract It has been realized by several investigators that with some exceptions compounds containing the hydroxyl group have a sharp absorption band close to 2.75μ, and frequently another much wider band about 3μ. Erreta and Mollet (1936, 1937) and Erreta (1937) have shown that the latter is an "association" band which diminishes on dilution in a non-polar solvent, or by raising the temperature, when the association complexes split up and the hydroxyl band at 2.75μ becomes more pronounced. (Compare also Barchewitz (1937) and Freymann (1937). In the present investigations of the infra-red absorption spectra of certain hydroxyl compounds in the 3μ region we have made observation of the effect of the structure of the molecule on both the above-mentioned bands, as well as on the CH vibration bands. The OH bands in the region about 1.4-1.6μ have been investigated by Wulf and his co-workers (1935, 1936) for the most part with solutions of about 0.01 mol./l/ in which the association band had practically disappeared.