Hand book of Chemistry volume 5
Hand book of Chemistry volume 5
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) 3. When heated with oil of vitriol it becomes strongly coloured and eliminates sulphurous acid gas. It is not decomposed at ordinary temperatures by chlorine or bromine, or when heated with moderately strong nitric or dilute sulphuric acid. 4. Nitrobenzene is but little affected by aqueous potash or ammonia at a boiling heat, or by lime when distilled over it; but with boiling alcoholic potash it forms a red liquid, which when distilled yields azobenzene C 24 N 2 H 10 in the form of a red liq...uid crystallising as it cools, whilst a peculiar potash-salt remains in the retort. (Mitscherlich. ) In this process, aniline also distils over, and at a later stage a large quantity of oxalic acid is found in the residue. (H of maim & Muspratt, Ann Pharm. 54, 27. ) The solution of 1 vol. Nitrobenzene in 8 vol. Strong alcohol boils, on addition of a quantity of hydrate of potash equal to that of the nitrobenzene, assuming at the same time a dark brown-red colour, and, after the boiling has been up for some minutes by external heating, deposits yellowish brown needles of azoxybenzene, C 24 N 2 H 10 2, and, when the alcohol is distilled off, separates into two layers, the lower of which contains potash, carbonate of potash, a brown potash-salt easily soluble in water, nearly insoluble in alcohol (whereas the brown acid contained in it dissolves in alcohol but not in water), and an indifferent dark brown powder, sparingly soluble in water and alcohol, whilst the upper layer is a dark brown oil which, on cooling, gradually solidifies into needle-shaped azoxybenzene (amounting to half the nitrobenzene;.
What to read after Hand book of Chemistry volume 5?
You can find similar books in the "Read Also" column, or choose other free books by Leopold Gmelin to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
) 3. When heated with oil of vitriol it becomes strongly coloured and eliminates sulphurous acid gas. It is not decomposed at ordinary temperatures by chlorine or bromine, or when heated with moderately strong nitric or dilute sulphuric acid. 4. Nitrobenzene is but little affected by aqueous potash or ammonia at a boiling heat, or by lime when distilled over it; but with boiling alcoholic potash it forms a red liquid, which when distilled yields azobenzene C 24 N 2 H 10 in the form of a red liq...uid crystallising as it cools, whilst a peculiar potash-salt remains in the retort. (Mitscherlich. ) In this process, aniline also distils over, and at a later stage a large quantity of oxalic acid is found in the residue. (H of maim & Muspratt, Ann Pharm. 54, 27. ) The solution of 1 vol. Nitrobenzene in 8 vol. Strong alcohol boils, on addition of a quantity of hydrate of potash equal to that of the nitrobenzene, assuming at the same time a dark brown-red colour, and, after the boiling has been up for some minutes by external heating, deposits yellowish brown needles of azoxybenzene, C 24 N 2 H 10 2, and, when the alcohol is distilled off, separates into two layers, the lower of which contains potash, carbonate of potash, a brown potash-salt easily soluble in water, nearly insoluble in alcohol (whereas the brown acid contained in it dissolves in alcohol but not in water), and an indifferent dark brown powder, sparingly soluble in water and alcohol, whilst the upper layer is a dark brown oil which, on cooling, gradually solidifies into needle-shaped azoxybenzene (amounting to half the nitrobenzene;.
What to read after Hand book of Chemistry volume 5?
You can find similar books in the "Read Also" column, or choose other free books by Leopold Gmelin to read onlineMoreLess
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