A Compendious Manual of Qualitative Chemical Analysis by Charles William EliotA Compendious Manual of Qualitative Chemical Analysis by Charles William Eliot

A Compendious Manual of Qualitative Chemical Analysis

byCharles William Eliot

Paperback | October 12, 2012

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1885 edition. Excerpt: ...while hot, but reddish-yellow to red when cold; these sublimates look not unlike that of pure sulphur. e. 7 eroxide of antimony fiist fuses to a yellow liquid and then gives a white sublimate, composed of needle-like crystals. /. Oxalic acid gives a white, crystalline sublimate with dense fumes in the tube. Other reactions besides those just mentioned sometimes occur during the examination of a substance in the closed-tube: they are, however, of less importance and, in fact, the inferences lo be drawn from the appearances already indicated are of very unequal value. Thus the detection of organic matter is of importance, because, as has been stated, such matters musi generally be got rid of before the analysis can be proceeded with. Again the presence, or entire absence, of ammonium salts should be put beyond doubt at this first stage of the examination Thirdly, the presence of mercury, or of mercurous salts, determines the choice of the acid solvent in favor of nitric acid, in case water will not dissolve the substance under examination (§ 85), and the presence of mercuric salts renders necessary the substitution of sulphydrate of ammonium for sulphydrate of sodium as the solvent for the sulphides of Class III (§ 27). Aceord-iugl.y, it is useful to get information of the presence of mercury or its compounds at this early stage of the examination. As to the other appearances, they give information which may be convenient, but is never essential for the safe conduct of the regular course of analysis. Practically the closed-tube test may generally be conducted as follows:--The substance is introduced into the tube as stated above, a strip of moistened litmus paper is folded loosely across the mouth of the tube, and the tube heated...
Title:A Compendious Manual of Qualitative Chemical AnalysisFormat:PaperbackDimensions:58 pages, 9.69 × 7.44 × 0.12 inPublished:October 12, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217662382

ISBN - 13:9780217662383