Determination of Nitric Acid in Nitrating Mixtures
Using the principle of injection enthalpiemetry the determination of HNO3 in nitrating mixtures can be carried out. The analytical reaction is the nitration of benzene which reacts rapidly and — depending on the ratio of sample and benzene — selectively with HNO3. The repeatability of the method within a concentration range of 20 to 60% wt./wt, of HNO3 is about ±0, 4% HNO3. The new method compares favorable with other analytical method used until now.
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