Calculations in the Investigation of Oils and Fats with Special Reference to Fish Oils. Part II.

Abstract

The equations given in Part I showing the relationships between the iodine value and saponification equivalent of mixtures of fatty acids or their esters and those of the individual components have been expressed in a simplified notation. Equations for the following fundamental relationships have also been derived: (a) the relation between the weight and saponification equivalent of a mixture of hydrogenated esters and the weight and saponification equivalent of the original mixture; (b) the relation between the weight and iodine value of a mixture of esters and the weight and iodine value of the original esters. Equations involving thiocyanogen values have been introduced. In the case of simple mixtures these equations afford a means of testing the truth of the assumptions underlying the thiocyanogen method of analysis. Also, an illustration of the method of dealing with analyses involving redundant data has been given.