ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Starch dialdehyde. V. Indirect determination of the degree of oxidation by a hydrazone method

K. Tihlárik, V. Kaláč, and K. Babor

Institute of Chemistry, Slovak Academy of Sciences, 809 33 Bratislava

Abstract:  A method for indirect determination of the degree of oxidation of starch dialdehyde has been elaborated. It is based on the reaction of 2,4-dinitrophenyl- or 4-nitrophenylhydrazine with aldehyde groups in starch dial­dehyde followed by the iodometric determination of the excess of the reagent using biamperometric indication. The formed hydrazones present in the analyzed mixture do not interfere with the determination. The advantage of the newly developed method lies in its simplicity, and its results are virtually identical with those obtained by means of the standard hydroxylamine method.

Full paper in Portable Document Format: 341a129.pdf

Chemical Papers 34 (1) 129–135 (1980)