Excerpt from The Manufacture of Intermediate Products for Dyes The manufacture of intermediate products for dyes dates from the discovery of mauveine by Perkin in 1856 and the consequent necessity of the production of nitrobenzene, and from it aniline, on the large scale. The aniline of that period, owing to the imperfect methods of separating benzene and toluene, naturally contained toluidine, and the crude mixture was, curiously enough, admirably adapted for making magenta. A few years later dinitrobenzene was ...
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Excerpt from The Manufacture of Intermediate Products for Dyes The manufacture of intermediate products for dyes dates from the discovery of mauveine by Perkin in 1856 and the consequent necessity of the production of nitrobenzene, and from it aniline, on the large scale. The aniline of that period, owing to the imperfect methods of separating benzene and toluene, naturally contained toluidine, and the crude mixture was, curiously enough, admirably adapted for making magenta. A few years later dinitrobenzene was manufactured and reduced to m phenylenediamine for the purpose of making Manchester brown, followed by dimethylaniline, diphenylamine, benzyl chloride, and other derivatives of benzene and toluene. About the year 1869 came the demand for anthraquinone and hence for a purer form of anthracene than had up to that time been produced. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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