Hand Book of Chemistry, Volume 13Cavendish society, 1859 |
Contents
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Common terms and phrases
acetate of lead alcoholic solution aldehyde alkaline ammonia anisic aqueous solution baryta becomes benzoic acid Berzelius boiling alcohol boiling water Bouis bromine brown caffeine Cahours caprylic alcohol carbonic acid Chem Chim chinoline chloric acid chloride cinnamic acid cold water colour colourless compound Compt conine containing cooling crystallises crystals decomposed decomposition deposits dilute dissolved in alcohol dissolves readily distilled dried Erdmann ether ethyl evaporated evolved filtered filtrate flakes Formation forms Gerhardt heated Herzog Hofmann hydrate of potash hydrochloric acid indigo indigo-blue insoluble iodide isatin Kopp Laurent lime liquid melts mixed mixture Mulder needles neutral nitrate of silver nitric acid obtained odour oil of cinnamon oil of vitriol oxalic oxide Peligot Pharm phloretic Phys potassium powder precipitate Preparation prisms purpurin rend residue resin salt separates soda solidifies soluble in alcohol soluble in water suberic suberic acid sublimate sulphate sulphindigotic sulphuric acid temperature vacuo vapours yellow yields
Popular passages
Page 566 - It has neither taste nor smell, is insoluble in water, but dissolves in all proportions in alcohol and ether.
Page 160 - The filtrate is evaporated to the consistence of a thick syrup, and the residue is treated with a mixture of three parts absolute alcohol and one part ether, as long as it continues to grow turbid. A precipitate of sulphate of ammonia is thus formed, from which the liquid is filtered and then distilled; and the residue is heated in a water-bath and repeatedly moistened with water, until no more alcoholic vapours are perceptible. On cooling, the mass is found to contain a number of micaceous laminae,...
Page 370 - Crystallises. (Cahours.) Pelargonie acid suspended in ammonia and heated, forms a transparent jelly resembling gelatinous silica. This jelly dissolves when heated with a larger quantity of water, and forms a milky liquid, resembling a solution of soap, and congealing in the cold to a pap-like jelly. The salt dissolves very readily in cold alcohol. (Gerhardt.) Pelargonate of Potash and Pelargonate of Soda, are readily soluble and crystallise.
Page 48 - The solution is evaporated to dryness and the residue is dissolved in 10% HN03.
Page 160 - The distillate, consisting of a watery liquid and oily conine, which still contains water in solution (whence it becomes turbid when heated) is mixed with chloride of calcium as long as the latter continues to absorb water, and then distilled; ammonia is then evolved, and there remains a brown resinous residue. The distillate is again treated with chloride of calcium and distilled in a sand-bath, and the product, which is almost colourless, is rectified alone : it then leaves a small resinous residue.
Page 38 - ... are slaked; and to this is added a solution of 3 pts. of sulphate of iron free from copper, the whole being stirred. (If the sulphate of iron is yellowish, one-third more is taken.) Water is then added to the amount of 100 or 200 times the weight of the sulphate of iron, according as the dye is required dark or light, and the whole, after being stirred, is allowed to rest. The proportions quoted are those most commonly employed in dyeing; when the indigo is particularly pure, more lime and sulphate...
Page 154 - If the crystalline precipitate is filtered off, washed with a little hot water, and then dissolved in a large quantity of boiling alcohol, the solution deposits, on cooling, long, brilliant, brittle needles, from 1 to 2 inches long, resembling picrate of potash. Permanent in the air. Does not lose weight on drying in vacuo at 100°. Explodes rather violently when heated. Heated with aqueous potash it is converted into picrate of potash and sparteine. It is hut slightly soluble in alcohol, even at...
Page 522 - C4Mn(N,H3Mn)Oe + 6Aq. — When a boiling solution of oxalate of ammonia is saturated with oxalato of manganese, the liquid filtered, and ammonia added till the filtrate smells slightly of it, a white or slightly green crystalline powder is precipitated, consisting of transparent microscopic crystals, which have the form of square prisms, but are so much truncated that they are scarcely distinguishable from cubes. 214-2 .... 100-00 Winkelblech assigned to a salt prepared in a similar manner, the formula...
Page 40 - ... (Laurent). Its lustre is semi-metallic, and by reflected light, dark-red inclining to copper-red (according to Crum, it is red when viewed obliquely under the microscope ; and of a brilliant blue when viewed perpendicularly). When prepared in the wet way, it is dark blue, and acquires by pressure a dark copper colour and almost metallic lustre. It is inodorous and tasteless, and does not react upon vegetable colours. — In open vessels, it volatilises at about 288° in dark purple-red vapours...
Page 163 - ... soluble in water, alcohol, and ether. (Blyth.) — Anhydrous conine becomes heated in contact with iodine, and forms thick white fumes and a readily fusible mass, which is at first blood-red and afterwards turns olive-green ; this body dissolves in water, forming a nearly colourless solution, and depositing a black thick resin.