The Chemical Gazette, Or, Journal of Practical Chemistry, in All Its Applications to Pharmacy, Arts, and Manufactures, Band 11William Francis, Henry Croft R. and J. E. Taylor, 1853 |
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acetic acid action added æther ætherial æthyle alcohol alcoholic solution alkalies alumina ammonia anhydrous antimony arsenic atoms baryta boiling boracic acid borate brown Carbon Hydrogen carbonate of soda carbonic acid caustic cent Chem chloride cinchonine cobalt cold colour colourless composition compound contained cooling copper crucible crystalline crystals decomposed decomposition dilute dissolved distillation employed equivs evaporated excess fatty filtered filtrate fluid fluoride formed formula furnished fused glycerine heat hydrate hydrochloric acid hydrogen insoluble iodide iodine iron latter lime liquid magnesia manganese mass mercury metallic mixed mixture molybdic muriatic acid neutral nitrate nitric acid nitrogen obtained odour oxide oxygen palladamine per-centage phosphoric acid platinum portion potash potassium precipitate produced pure quinidine reaction readily residue salt sebacic acid separated silicates silver small quantity soap sodium soluble in water substance sulphate sulphuret sulphuric acid temperature tion volatile washed water-bath weight whilst yellow zinc
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Seite 318 - The author then instituted experiments to test this method. From these it appeared that distilled water to which a known quantity of ammonia had been added, furnished more ammonia than had been mixed with it ; so that, apparently, all distilled water contains ammonia. The water employed in the following experiments was distilled first with sulphate of alumina, and afterwards over potash, to remove any ammonia and carbonic acid that might be contained in it. In the following table the first column...
Seite 440 - The pnlp is then partially dried, in which state it may be pressed or rolled into sheets, or moulded into other forms. These sheets or moulded articles are then dipped into oleaginous or glutinous matter or oil, and are afterwards baked in an oven similar to that employed when manufacturing sheets or moulded articles of papier-mache. — Sealed October 12, 1852. Patent granted to J. Higgin, for Improvements in the Manufacture of certain Mordants used in preparing Woven or Textile Fabrics, for printing,...
Seite 225 - They should be washed, in the first instance, with a little water, to which a few drops of acetic acid have been added. When...
Seite 138 - One of the strongest arguments against the view that the oxygen acids contain water, is afforded by the results of recent researches (especially of MM. Laurent and Gerhardt) on the atomic weight of acids. Those chemists have rendered more definite and exact than they had been before, our ideas on the distinctions between monobasic, bibasic, and tribasic acids, and have clearly established that the correct expression of the atom of nitric acid must be such as contains half as much hydrogen as is contained...
Seite 137 - SO4, in the same way as hydrochloric acid is the hydrogen compound of chlorine. There were many arguments in favour of this view, amongst which the most prominent was derived from the fact, that when a salt of the one class, as chloride of potassium, decomposes a salt of the other, as sulphate of silver, the result is exactly in conformity with what must occur on the supposition of the compound radical ; and in like manner, the electrolytic decomposition of a sulphate moves the group SO4 to the positive...
Seite 138 - A similar fact M. Gerhardt has proved respecting a great number of organic acids, by preparing bodies which stand to them in the same relation as ether does to alcohol. The researches of M. Cahours had led to the discovery of a series of bodies necessary for Gerhardt's process. These were obtained by the action of pentachloride of phosphorus on various hydrated organic acids, and consisted of chlorine combined with the oxygenized radical of the acid. Thus from benzoic acid was prepared the chloride...
Seite 333 - ... can be added to precipitate the sulphuric acid, and the subsequent facility with which that excess of lead can be got rid of. It may be well to state that experiments were made to prove the perfect precipitation of the sulphuric acid from the sulphates of the alkalies by the salts of lead, and it is only after numerous comparative results that it is now recommended.
Seite 339 - ... quantity, and to entitle it to rank as a method by which all but the merest trace of the alkalies could be extracted from the insoluble silicates. 59. The proportion of sal-ammoniac added to the carbonate of lime as here recommended, was arrived at after numerous experiments. By increasing the sal-ammoniac, and thereby augmenting the amount of chloride of calcium formed, the mass fuses more thoroughly, but the water does not disintegrate it as completely as when the ammoniacal salt is less ;...
Seite 138 - Now, on bringing any one of these chlorides in contact with the potassium salt of the corresponding acid, the chemical force of combination between chlorine and potassium induced the decomposition. These results can be most simply stated in the form adopted by M. Gerhardt, the discoverer, which consists in comparing the composition of these bodies with that of water, from which they are formed, by the substitution of one or both atoms of hydrogen by organic radicals.
Seite 418 - Pearsoll, which were obtained while searching the coast of Africa, between Saldanha Bay and the island of Ichaboe, for guano deposits. The crystals are of carbonate of lime, inclosing sand ; 15 to 20 per cent. of sand is obtained from some specimens. The crystals are very hard, and have sharp cutting edges, so as to make it a painful task to walk upon them. The beach was covered with crystals to the extent of miles ; and was from one-half to one mile in breadth.