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Originally appearing in Volume V26, Page 845 of the 1911 Encyclopedia Britannica.
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C6H6 < s > C6H4 —~ NO2 • C6H3< S > CCH, • NO2 – NH2 • C6H, < $ > CeH6 NH2 _ HN : C6Ha~ s > C$H3 •NH2 Honour, of the Concordat and of the Consulate for life, and his appointment as prefect of the Bouches du Rhone, with consequent banishment from Paris, was a semi-disgrace. A peer of the Hundred Days, he fled at the second Restoration to Lausanne. During his exile he lived in Vienna, Prague, Augsburg and Brussels, occupying himself with his Memoires sur la Convention et le Directoire (Paris, 2 vols., 1824); Memoires sur le Consulat: par un ancien conseiller d'etat (Paris, 1827); Histoire generale de Napoleon Bonaparte (6 vols., Paris and Stuttgart, 1827—28, vol. iii. not printed); Le Consulat et l'Empire vol. i. of which is identical with vol. vi. of the Histoire de Napoleon (so vols., 1834). The revolution of 1830 permitted his return to France, and he lived to become a member of the Imperial Senate under the third empire. He died in Paris on the 8th of March 1854 in his eighty-ninth year. Methylene blue is the most important of all blue basic dyes and is put on the market frequently in the form of its zinc chloride double salt, which is soluble in water. Acid oxidants in dilute aqueous solution convert it into methylene azure. See further A. Bernthsen, Ann., 230, p. 73; 251, p. I; German Patents 45839 (1887); 47374 (1888). For a discussion as to the constitution of these dyestuffs, whether they are quaternary ammonium salts or thionium salts, see A. Hantzsch, Ber., 1906, 39, pp. 153, 1365; F. Kehrmann, ibid., 1906, 39, p. 914.
End of Article: C6H6

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