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Encyclopedia Britannica - Main :: PER-PIG |
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PHERECRATES , Greek poet of the Old Attic Comedy, was a contemporary of Cratinus, Crates and Aristophanes. At first an actor, he seems to have gained a prize for a play in 438 B.C. The only other ascertained date in his life is 420, when he produced his play The Wild Men. Like Crates, whom he imitated, he abandoned personal satire
imagination
Horace .A considerable number of fragments from his 16 (or. 13) plays has been preserved, collected in T. Kock, Comicorum Atticorum Fragmenta, i. (188o), and A. Meineke
Para position, or by oxidizing ortho-hydroxydiaminodiphenylamines (R. Nietzki, Ber., 1895, 28, p. 2976; 0. Fischer, ibid., 1896, 29, I p. 1874). They are yellowish-red solids, which behave as weak bases, their salts undergoing hydrolytic dissociation in aqueous solution. When heated with concentrated hydrochloric acid the amino group is replaced by the hydroxyl group and the phenolic eurhodols are produced. The symmetrical diaminophenazine is the parent substance of the important dyestuff toluylene red or dimethyldiaminotoluphenazine. It is obtained by the oxidation of orthophenylene diamine with ferric chloride; when a mixture of para-aminodimethylaniline and meta-toluylenediamine is oxidized in the cold, toluylene blue, an indamine, being formed as an intermediate product and passing into the red when boiled; and also by the oxidation of dimethylparaphenylene diamine with metatoluylene diamine. It crystallizes in orange-red needles and its alcoholic solution fluoresces strongly. It dyes silk and mordanted cotton
Phenazone is an isomer of phenazine, to which it bears the same relation that phenanthrene bears to anthracene. It is formed by reducing diortho-dinitrodiphenyl with sodium amalgam and methyl alcohol, or by heating
or (X:\/~//) N: \ Phenazine. Phenazone. End of Article: PHERECRATES If you wish, you can link directly to this article.
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