The Infrared Absorption of Alcohol-Acetone Mixtures

Several mixtures of methyl alcohol and acetone have been studied in the region $2.5\mu$ to $8.5\mu$. The acetone was found to shift the OH vibrational band of alcohol to the shorter wave-lengths and to increase appreciably its intensity; the effects of the alcohol on acetone were to increase the intensity of the vibrational band of the CO group and to shift it to the longer wave-lengths. No other bands were measurably affected. The results indicate association of the alcohol and acetone through interaction of the OH and CO groups. The possibility of the formation of proton bonds is suggested.