IV. Notes of researches on the poly-ammonias.—No. XXI

Abstract

In a short paper submitted to the Royal Society about a year ago, I called attention to some of the by-products which are obtained in the manufacture of aniline upon a large scale, and more especially to toluylene-diamine, the primary diamine of the toluyl-series. MM. Collin and Coblenz, aniline manufacturers at Labriche, near St. Denis, Paris, to whose kindness I had been indebted for the material used in these researches, immediately after their publication transmitted to me with the utmost liberality a large quantity of basic oils boiling at temperatures higher than the boiling-point of aniline, which are separated from the pure aniline by rectification, and are known in the language of the laboratory as queues d’aniline .