Process for the application of IR spectroscopy for modulation and monitoring of diazonium ion concentration
AssigneeCiba-Geigy Corporation
InventorsFerenc Rakoczi, Rudiger Oxenius
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Abstract
The invention relates to a method of determining and controlling the diazonium ion concentration in diazotization solutions and/or in azo coupling reactions, which comprises determining said diazonium ion concentration by means of IR spectroscopy from the intensity of the N.tbd.N stretching frequency. The method is extremely selective and virtually trouble-free and permits the simultaneous determination of the concentration of different diazonium salts in mixtures.
Claims7
A method of determining and controlling the diazonium ion concentration in diazotisation solutions or in azo coupling reactions, which comprises determining said diazonium ion concentration by means of IR spectroscopy from the intensity of the N.tbd.N stretching frequency.
Dependencies are inferred from the claim text.