Abstract
The reactions of a number of functional groups with hydriodic acid reagents for the Zeisel method have been investigated. Only normal primary alkoxy groups quantitatively form volatile iodides which are stable in the reagent solutions at 100° C. The isomers of propoxy and butoxy groups, propylene glycol compounds and glycerol give varying yields of less stable iodides. The reaction for the formation and that for the decomposition of these iodides compete with each other under the conditions of the analysis, with different rates for different compounds. It therefore appears difficult to design analytical methods of general applicability. Methods with or without the use of empirical factors can be used for the analytical control of known substances or types of substances.
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