S. Ohashi
Aug 1, 1955
Citations
0
Influential Citations
8
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
(1) The iodic acid decomposition method for the determination of nitrogen in organic compounds, which has been reported already by the author, was extended to analyses of nitro and oxime compounds. (2) In a reaction vessel, a samplew as dissolved in acetone, reduced with a reducing agent to the corresponding amine, and then decomposed by heating with a mixture of iodic acid and strong phosphoric acid. The liberated nitrogen was determined by means of an azotometer. (3) After testing many reducing agents it was concluded that a mixture of iron metal powder and diluted sulfuric acid was the best. (4) For various nitro and oxime compounds satisfactory results were obtained by means of this modified method. (5) The specific gravity and the chemical composition of strong phosphoric acid prepared in the various conditions have been described complementally.