Organic compounds -- part of the class 532-570 series – Organic compounds – Diazo or diazonium
Patent
1986-08-22
1988-03-08
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Diazo or diazonium
422 62, 422 68, 422108, 422110, 534558, 534560, 534565, 534579, 534581, 534582, C07C11304, C09D 2900, G01N 2134, G05B 1100
Patent
active
047300370
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.
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Reed et al, Chemical Abstracts, vol. 88, #58042y (1978).
Hesse et al., Spektroskopische Methoden in der Organischen Chemie, Georg Thieme Verlag 1984, p. 53.
Oxenius Rudiger
Rakoczi Ferenc
Ciba-Geigy Corporation
Higel Floyd D.
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