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Issue 1125, 1969
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Spectrophotometric determination of the fungicide dithianon in aqueous formulation Delan-Col with 2,4-dinitrophenylhydrazine

Abstract

A simple and specific spectrophotometric method for determining dithianon in Delan-Col, based on reaction between the carbonyl groups of the fungicide and 2,4-dinitrophenylhydrazine, is described. It consists in dissolving the sample in an acetone-chloroform mixture, removing the solvents and refluxing the residue in neutral methanolic 2,4-dinitrophenyl-hydrazine. The resulting solution is made alkaline with methanolic N sodium hydroxide to give an amber colour, the optical density of which is measured at 550 nm. The error of the method was 2·1 per cent.

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Article type: Paper
DOI: 10.1039/AN9699401095
Analyst, 1969,94, 1095-1098

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    Spectrophotometric determination of the fungicide dithianon in aqueous formulation Delan-Col with 2,4-dinitrophenylhydrazine

    S. H. Yuen, Analyst, 1969, 94, 1095
    DOI: 10.1039/AN9699401095

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