A Handbook of Organic Chemistry: For the Use of StudentsWalton and Maberly, 1856 - 627 páginas |
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Términos y frases comunes
acetic acid acetyle acted action albumen aldehyde alkalies alloxan amide ammonia ammonium amyle analogous anhydrous aniline baryta bases benzoic acid bibasic bitter boiling bromine butyric C₁ Hs C₁₁ C₂ carbonic acid chlorine colour colourless composition compound contains converted crystallisable crystals cyanate cyanic acid cyanide cyanogen cyanuric decomposed decomposition deposits derived dissolved distilled ether ethyle fermentation formed formula formyle fusible H₁ H₂ heated homologous hydrated oxide hydrochloric acid hydrocyanic acid hydrogen hyduret of benzoyle indigo insoluble iodide isatine isomeric lime matter metals methylamine mixture neutral nitric acid nitrogen O₁ obtained odour oily liquid organic oxalic acid oxide oxide of ethyle oxidised oxygen phenyle potash potassium powder precipitate probably propylic pure radical replaced resins salicyle salts silver soda soluble in alcohol soluble in water sparingly soluble starch substance sugar sulphate sulphuric acid urea uric acid volatile yellow yields
Pasajes populares
Página 109 - Acid (u'rik), an acid which occurs in small quantity in the healthy urine of man and quadrupeds, and in much larger quantity in the urine of birds. Uric acid constitutes the principal proportion of the urinary calculi and the concretions causing the complaint known as the gravel.
Página 629 - Hand-Book of Organic Analysis; containing a detailed Account of the various Methods used in determining the Elementary Composition of Organic Substances. Illustrated by 85 Woodcuts. 12mo.
Página 41 - ... cannot account for it ; catalysis is thus merely a convenient term for all that we do not understand. And to the use of the word in this sense, namely, as a name for the agent which produces certain effects, the agent itself being unknown, there would be no objection, were it not that catalysis has been employed to account for phenomena not only different from each other, but actually of an opposite kind. For example, platinum, in causing the combination of oxygen and hydrogen, is said to act...
Página 509 - According to Dr. William Gregory, the loss amounts to the very large proportion of one-sixteenth part of the whole of the flour. He says, " To avoid this loss, bread is now raised by means of carbonate of soda, or ammonia and a diluted acid, which are added to the dough, and the effect is perfectly satisfactory. Equally good or better bread is obtained, and the quantity of flour which will yield fifteen hundred loaves by fermentation, furnishes sixteen hundred by the new method, the sugar and fibrin...
Página 324 - ... separates into two strata of liquid, the lower of which is a pure solution of tannic acid in water, which is drawn off and dried up after being washed with ether. The dry mass is redissolved in water, and again dried up in vacuo. Tannic acid thus obtained is nearly white, and not at all crystalline. It is very soluble in water and has a most astringent taste without bitterness. It is soluble in weak alcohol, but hardly soluble in ether. The aqueous solution, if exposed to the air, absorbs oxygen,...
Página 632 - Philosophy." By DIONYSIUS LARDNER, DCL, formerly Professor of Natural Philosophy and Astronomy in University College, London. Fourth Edition. Revised and Edited by EDWIN DUNKIN, FRAS, Royal Observatory, Greenwich.
Página 30 - The direct oxidation of organic compounds takes two distinct forms. The first is the familiar one of combustion, in which the action of the atmospheric oxygen is aided by a high temperature. The results differ according to the supply of oxygen. If there be an excess of air, or of oxygen, from any source, the whole of the carbon and hydrogen is converted into carbonic acid and water, which, along with uncombined nitrogen, are the ultimate products of the action of oxygen on organic matters. But if...
Página 367 - This interesting compound, which is blue indigo, phts 2 eq. oxygen, is formed by digesting indigo along with water, sulphuric acid, and bichromate of potash, or by heating indigo with weak nitric acid. It dissolves, and the solution on evaporation deposits aurora-red crystals of isatine, sparingly soluble in cold water, more soluble in hot water and in alcohol. By the action of chlorine, it yields two compounds in which hydrogen is partially replaced by chlorine. It may be volatilised if heated on...
Página 48 - They are distinguished froffl inorganic acids by their high atomic weight, and by the action of heat, which decomposes them all. As, in many of them, the oxygen they contain is a multiple by a whole number of the oxygen of the bases which neutralise them, so they are viewed as oxygen acids by those who consider true sulphuric acid to be an oxygen acid, 8Os, and oil of vitriol to be its hydrate, H 0, SOs.
Página 632 - Complete in itself, and to be purchased separately, form A COMPLETE COURSE OF NATURAL PHILOSOPHY. and are intended for the general reader •who desires to attain accurate knowledge of the various departments of Physical Science » without pursuing them according to the more profound methods of mathematical investigation. The style is studiously popular. It has been the author's aim to supply Manuals such as are required by the Student, the Engineer, the Artisan, and the superior classes in Schools....