Issue 1125, 1969

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.

Article information

Article type
Paper

Analyst, 1969,94, 1095-1098

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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