Abstract
A method of detection of aromatic sulfinic acids has been proposed, based on the treatment with nitrous gases, followed by spraying with a solution of the sodium salt of 2-naphthol-3,6-disulfonic acid (R-salt) and exposure to ammonia vapours. The mechanism of this method of detection has been elucidated. Chromatographic analysis of four aromatic sulfinic acids in several solvent systems has also been carried out.
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