Isopropyl alcohol as a solvent for free fatty acid titration

George H. Kyser of Barrow‐Agee Laboratories, Inc., Cairo, Illinois, suggested the possibility of using Isopropyl Alcohol as a substitute for Specially Denatured Alcohol, Formula No. 30, in the titration of free fatty acids in crude oil and in the oil of cottonseed samples. This substitution would eliminate the necessity of special permits and bonds for the use of alcohol. Isopropyl Alcohol and cotonseed oil are miscible in all proportions, thus simplifying the titration without the use of violent shaking. Isopropyl Alcohol, with the indicator, is added direct to the oil in the titrating flask and the titration made simply by a twirling motion of the flask. A series of comparative results indicate a very close agreement between titrations, using both Specially Denatured Alcohol and Isopropyl Alcohol as solvents. The author suggests that a committee make further study and recommendations on the use of Isopropyl Alcohol as a solvent.