An Introduction to Pharmaceutical ChemistryJ. van Voorst, 1867 - 447 pages |
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Page 44
... AmHO ) is believed to be formed , the analogue of hydrate of potassium ( KHO ) or sodium ( NaHO ) . The grounds for this belief are , that the solution does not al- ways give the same reaction as the gas itself , the observed analogy of ...
... AmHO ) is believed to be formed , the analogue of hydrate of potassium ( KHO ) or sodium ( NaHO ) . The grounds for this belief are , that the solution does not al- ways give the same reaction as the gas itself , the observed analogy of ...
Page 45
... AmHO 2 Water . NH , + H2O Ammonia gas . Hydrate of ammonium ( ammonia ) . Solutions of ammonia , prepared by this process on a large scale and in suitable apparatus , are met with in pharmacy — the one containing 32.5 per cent . , the ...
... AmHO 2 Water . NH , + H2O Ammonia gas . Hydrate of ammonium ( ammonia ) . Solutions of ammonia , prepared by this process on a large scale and in suitable apparatus , are met with in pharmacy — the one containing 32.5 per cent . , the ...
Page 46
... AmHO = Am , CO , H2O . 3 Neutral carbonate of ammonium is the salt formed on adding strong solution of ammonia to the commercial carbonate in pre- paring a pungent mixture for toilet smelling - bottles ; but it is unstable , and on ...
... AmHO = Am , CO , H2O . 3 Neutral carbonate of ammonium is the salt formed on adding strong solution of ammonia to the commercial carbonate in pre- paring a pungent mixture for toilet smelling - bottles ; but it is unstable , and on ...
Page 47
... AmHO + H , S = AmHS + H2O . Crystals of sulphydrate of ammonium ( AmHS ) may be obtained on bringing ammonia gas ( NH , ) and sulphuretted hydrogen ( HS ) together at a low temperature . They are soluble in water without decomposition ...
... AmHO + H , S = AmHS + H2O . Crystals of sulphydrate of ammonium ( AmHS ) may be obtained on bringing ammonia gas ( NH , ) and sulphuretted hydrogen ( HS ) together at a low temperature . They are soluble in water without decomposition ...
Page 64
... AmHO , Am , CO ,; boil and filter . Precipitate Ba Ca. Wash , dissolve in HC , H , O ,, 2 3 add K , CrO4 , and filter . Precipitate Ba . Filtrate Ca. Test by Am , C2O1 . Filtrate Mg Am Na K. Add Am , HPO ,, shake , filter . Precipitate ...
... AmHO , Am , CO ,; boil and filter . Precipitate Ba Ca. Wash , dissolve in HC , H , O ,, 2 3 add K , CrO4 , and filter . Precipitate Ba . Filtrate Ca. Test by Am , C2O1 . Filtrate Mg Am Na K. Add Am , HPO ,, shake , filter . Precipitate ...
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Common terms and phrases
acetic acid acid gas acidulous radical add solution alcohol alkaline aluminium ammonia analysis Analytical Reactions antimony aqueous solution arsenic arsenicum Atomic weight barium basylous bismuth boiling British Pharmacopoeia calcium carbonate of potassium carbonate of sodium carbonic acid carbonic acid gas chemical chloride of calcium chromate of potassium colour compounds containing copper crucible crystals cyanide dilute dissolved distilled drop elements ether evaporated excess ferric ferrous filter filtrate formula glass grains grammes H₂O heat hydrate hydrochloric acid hydrocyanic acid hydrogen hyposulphite insoluble iodide of potassium iodine iron lead lime liquid magnesium mercury metal mixture molecular weight molecule neutral nitrate of silver nitric acid obtained odour officinal ounce oxalic acid oxide oxygen perchloride phosphate phosphoric acid platinum potassium prepared present produced pure residue salt small quantity soda sodium specific gravity starch substance sulphate sulphide sulphuretted hydrogen sulphuric acid sulphydrate of ammonium Synthetical test-tube tion tube washed yellow yield zinc
Popular passages
Page 326 - ... is the weight of a bulk of water equal to the bulk of the light body. For instance, a piece of wood weighing 12 grammes (or grains) is tied to a piece of metal weighing 22 grammes, the loss of weight of the metal in water having been previously found to be 3 grammes.
Page 324 - To express the same thing by rule, divide the weight in air by the loss of weight in water, the resulting number is the specific gravity in relation to 1 part of water, the conventional standard of comparison.
Page 362 - ten grains dissolved in water, and nitrate of silver added in excess, give a precipitate which, when washed with water and afterwards with half an ounce of solution of ammonia, and dried, weighs 12-5 grains.
Page 318 - Millilitre = 1 cub. centim. or the mea. of 1 gram, of water 1 Centilitre= 10 „ 10 „ „ 1 Decilitre = 100 ,. 100 „ „ 1 Litre =1000 „ 1000 ,, (1 kilo.) MEASURES OF LENGTH. 1 Millimetre = the thousandth part of one metre, or...
Page 279 - ... measures agitated with an equal volume of water are reduced to 45 by an absorption of 10 per cent...
Page 376 - ... minims of hydrochloric acid, and allow it to macerate for twenty-four hours. Transfer the whole to a small percolator, and after the fluid has ceased to drop, add at intervals about an ounce and a-half of similarly acidulated water, or until the fluid which passes through is free from colour.
Page 306 - ... and, stirring the whole together assiduously, continue the evaporation at a temperature not exceeding 140° F. until the extract is of a suitable consistence for forming pills.
Page 377 - Take of Opium 100 grains; Slaked Lime, 100 grains; Distilled Water, 4 ounces. Break down the Opium, and steep it in an ounce of the water for twenty-four hours, stirring the mixture frequently. Transfer it to a displacement apparatus and pour on the remainder of the water in successive portions, so as to exhaust the Opium by percolation. To the infusion thus obtained, placed in a flask, add the Lime ; boil for ten minutes, place the undissolved matter on a filter, and wash it with an ounce of boiling...
Page 305 - For educational practice either of the above-named five raw materials may be employed ; but in order that attention may be concentrated on the process by which the extracts are prepared, rather than on any one of the extracts themselves, it suffices to make an extract of some ordinary green vegetable, such as cabbage or turnip-tops. Bruise the green leaves of a good-sized cabbage in a mortar, and press out the juice; heat it gradually to 130° F., and remove the green flocks of chlorophyll which...