24 research outputs found
Coulometric titration of benzoic and isonicotinic acid derivatives of hydrazides and acylhydrazones
It was found that benzoic acid hydrazides rapidly and quantitatively react with electrogenerated chlorine and bromine under the conditions of galvanostatic coulometry. Benzoic acid hydrazides were determined in model solutions. A good precision (RSD varied from 1 to 6%) allowed coulometry to be applied to the determination of isonicotinic acid hydrazide in isoniazid tablets and isonicotinic acid 3-methoxy-4-hydroxybenzylidenehydrazide in phthivazid tablets. © 2008 MAIK Nauka
Coulometric titration of benzoic and isonicotinic acid derivatives of hydrazides and acylhydrazones
It was found that benzoic acid hydrazides rapidly and quantitatively react with electrogenerated chlorine and bromine under the conditions of galvanostatic coulometry. Benzoic acid hydrazides were determined in model solutions. A good precision (RSD varied from 1 to 6%) allowed coulometry to be applied to the determination of isonicotinic acid hydrazide in isoniazid tablets and isonicotinic acid 3-methoxy-4-hydroxybenzylidenehydrazide in phthivazid tablets. © 2008 MAIK Nauka
La Patrie : journal quotidien, politique, commercial et littéraire
29 février 18481848/02/29 (A8,N60)