Hand-Book of Chemistry Volume 8

Hand-Book of Chemistry Volume 8

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1853 edition. Excerpt: ... when distilled even with large quantities of hydrated? phosphoric acid, yields but a small quantity of ether, not containing either wine-oil or the phosphovinate of wine-oil. The residue chars, and yields olefiant gas, water, together with a 6mall quantity of an oil which floats on tho water and has an odour different from that of wine-oil. (Serullas, Ann. Chim. Phys. 39, 152; also Schw. 55, 170.) Respecting etherificntion by phosphoric acid, according to Boullay, vid. p. 174. Aqueous phosphoric acid of sp. gr. less than 12 has no action upon alcohol; but 5 pts. of the syrupy acid heated with 1 pt. alcohol yield, with brisk effervescence, a large quantity of olefiant gas, and a small quantity of wine-oil, the mixture assuming a deep brown colour, and depositing light carbonaceous flakes. Phosphoric acid forms ether much less quickly than sulphuric acid, not because it unites less readily with the alcohol, but because tho phosphovinic acid formed in the process resists decomposition much more strongly than sulphovinic acid. (Pelouze, J. Chim. med. 9, 131 and 145.) At the commencement of the distillation, the dilute phosphoric acid formed together with the phosphovinic acid, gives off its water; the phosphovinic acid is then resolved into hydrated phosphoric acid, which gives off no more water, even when more strongly heated, and ether, which iu the end is partly resolved into wine-oil and alcohol water 1 (Liebig, Handworterh. 1, 115.) 15. When 3 pts. of vitrcficJ boracic acid in the state of powder are. heated with 1 pt. of absolute alcohol, defiant gas is given off abundantly and regularly; the mixture docs not blacken, but leaves a residue of mono-hydrated boracic acid, which does not give off water till more strongly heated. (Ebelmen, Compt....
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Product details

  • Paperback | 260 pages
  • 189 x 246 x 14mm | 472g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123659536X
  • 9781236595362