A Dictionary of Chemistry And the Allied Branches of Other Sciences volume 81
A Dictionary of Chemistry And the Allied Branches of Other Sciences volume 81
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, CH' 2. Chrysophanimide, C 15 H B N0 2 = C 14 H 5 ] NH. The long dark shining needles VQ 2 mentioned above as produced, together with chrysophanamide, when chrysophanic acid is heated with aqueous ammonia to 150, consist of the ammonia-compound of this imide, C IS H B N0 2 . NH 8 . It has not been found possible to obtain the free imide, because the ammonia-compound is converted by prolonged treatment with acids or alkalis into chrysophanic acid. But by heating this ammonia-compound with aceti...c anhydride in a vessel with reversed condenser, it is converted into acetylchrysophanimide , CH S C 14 H 5 \ N. C 2 H 8 0. This substance in its external properties bears a close resemblance lO 2 to xylindei'n. It separates from chloroform in violet needles, which have a metallic lustre, are but slightly soluble in the ordinary solvents, resist soda-solution, and dis- solve in warm nitric or sulphuric acid, with reproduction of chrysophanic acid. An analogous substance is formed by the action of isobutyric anhydride on the ammonia- compound of chrysophanimide.
What to read after A Dictionary of Chemistry And the Allied Branches of Other Sciences volume 81?
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To quickly assess the difficulty of the text, read a short excerpt:
, CH' 2. Chrysophanimide, C 15 H B N0 2 = C 14 H 5 ] NH. The long dark shining needles VQ 2 mentioned above as produced, together with chrysophanamide, when chrysophanic acid is heated with aqueous ammonia to 150, consist of the ammonia-compound of this imide, C IS H B N0 2 . NH 8 . It has not been found possible to obtain the free imide, because the ammonia-compound is converted by prolonged treatment with acids or alkalis into chrysophanic acid. But by heating this ammonia-compound with aceti...c anhydride in a vessel with reversed condenser, it is converted into acetylchrysophanimide , CH S C 14 H 5 \ N. C 2 H 8 0. This substance in its external properties bears a close resemblance lO 2 to xylindei'n. It separates from chloroform in violet needles, which have a metallic lustre, are but slightly soluble in the ordinary solvents, resist soda-solution, and dis- solve in warm nitric or sulphuric acid, with reproduction of chrysophanic acid. An analogous substance is formed by the action of isobutyric anhydride on the ammonia- compound of chrysophanimide.
What to read after A Dictionary of Chemistry And the Allied Branches of Other Sciences volume 81?
You can find similar books in the "Read Also" column, or choose other free books by Henry Watts to read onlineMoreLess
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