Abstract
A new, selective method for the detection of o-phenylenediamine and some of its derivatives on thin-layer plates is described. o-Phenylenediamine is treated with methyl trichloromethylacetimidate and exposed to pyridine vapours. The derivatization is performed before the chromatography or in situ on the thin-layer chromatographic plate. The detection limit is between 80–2000 ng, depending on the procedure and the compound detected.
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