515. Submicro-methods for the analysis of organic compounds. Part VII. The determination of nitrogen in heterocyclic compounds and azo-, hydrazo-, and nitro-compounds, and in the presence of other elements

Abstract

The submicro-method for the determination of nitrogen has been extended and modified for nitro-, azo-, and hydrazo-compounds, heterocyclic bases, and nitrogenous compounds which contain sulphur and the four halogens. The modified procedure is as accurate as the original one.

Organic Microchemistry

“…Kirsten (112, US) has reported on the determination of carbon, hydrogen, nitrogen, sulfur, and phosphorus using 0.1-mg. samples. Belcher and collaborators have published a series of papers on submicromethods in which carbon (9), nitrogen (14,21), and bromine and iodine (19) are determined on the 50scale. Battley (11) describes a method to determine carbon by wet oxidation with alkaline persulfate and measuring the carbon dioxide in the Warburg manometer.…”