Barnett, E. de Barry (Edward de Barry), 1886-1961 · New York : D. Van Nostrand · leaf 217
194 COAL TAR DYES AND INTERMEDIATES The dye is still used to a considerable extent, especially for colouring leather, under the names of chrysaliline, leather yellow, phosphine, etc. The commercial article is a mixture of the above acridine and the corresponding toluene homologue. Its formation as… … NH2 But few acridine compounds are of any importance as dyes. They are obtained by condensing aldehydes with meta-diamines in acid solution and then closing the acridine ring by loss of ammonia (heating with hydrochloric acid under pressure). Thus, when formaldehyde is condensed with ftt-toluylene…
Dyes and dyeing · Coal-tar colors
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