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ISSN electronic edition: 1336-9075
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Estimation of functional groups and degree of substitution in carboxymethylstarch

K. Tihlárik and M. Pašteka

Institute of Chemistry, Centre for Chemical Research, Slovak Academy of Sciences, CS-842 38 Bratislava


Abstract: Estimation of carboxymethyl groups in carboxymethylstarch (Na+ form) by titration with perchloric acid in acetic acid was examined. The method is simple, rapid, convenient and does not require a sophisticated laboratory equipment. It is suitable for large number of routine analyses and also for structural studies, which require a rapid and sufficiently precise information. The results obtained by the reference alkalimetric, our, and complexometric methods were compared. There was a good agreement between the values obtained by the first two methods. The complexometric method afforded slightly lower values.

Full paper in Portable Document Format: 415a703.pdf


Chemical Papers 41 (5) 703–708 (1987)

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