Uses, Tests for Purity and Preparation of Chemical Reagents; Employed in Qualitative, Quantitative, Volumetric, Docimastic, Microscopic and Petrographic Analysis, with a Supplement on the Use of the Spectroscope
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Home > Art, Film & Photography > Uses, Tests for Purity and Preparation of Chemical Reagents; Employed in Qualitative, Quantitative, Volumetric, Docimastic, Microscopic and Petrographic Analysis, with a Supplement on the Use of the Spectroscope
Uses, Tests for Purity and Preparation of Chemical Reagents; Employed in Qualitative, Quantitative, Volumetric, Docimastic, Microscopic and Petrographic Analysis, with a Supplement on the Use of the Spectroscope

Uses, Tests for Purity and Preparation of Chemical Reagents; Employed in Qualitative, Quantitative, Volumetric, Docimastic, Microscopic and Petrographic Analysis, with a Supplement on the Use of the Spectroscope


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This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1890. Not illustrated. Excerpt: ... metals are precipitated from solution by the sodium pyrophosphate, add are redissolved as double salts when the sodium salt is added in sufficient excess. By adding either ammonium hydrate, or carbonate, or oxalate, or various other substances, to the solution, itis possible to precipitate some of the metals by the electric current, leaving others in solution Brand). The salt is prepared"by heating to redness pure secondary orthophosphate, dissolving and crys" tallizing the residue. It forms large, transparent monoclinic prisms, soluble in ten parts of cold and 1 part of boiling water. Sodium phospho-tungstate, see phospho-tungstic acid, page 18. SODIUM SALICYLATE, 2 Na C? Ks Os + Hs O, is proposed by Eager as a reagent to test the purity of quinine sulphate. To a saturated solution of quinine sulphate in water a few drops of 20% solution of sodium salicylate are added. If the quinine was pure the solution remains clear; cloudiness indicates presence of other cinchona alkaloids. It also serves to detect ethyl-and especially methyl-alcohol, by heating with a small amount of the salicylate and concentrated sulphuric acid, when it gives the odor of gaultheria. See also on page 88. SODIUM SELENATE, Nas Se 04 + 10 Ha O, is proposed by Johannson for detection of colocynthin, which is colored reddishyellow in contact with a solution of sodium selenate in dilute sulphuric acid. Also used for demonstrating brucine in microscopical sections of strychnos seeds by using it dissolved in nitric acid (Lindt). The commercial product is sufficiently pure. SODIUM SULPHANTIMONATE, Nas Sb Si f 9 H' 0. Schlippe's Salt. Uses. For precipitation of quinine, morphine and other alkaloids, as sulphantimonates of yellow to brownish color, differing as to formation of resinous masses, solub...


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Product Details
  • ISBN-13: 9781150528019
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 246 mm
  • No of Pages: 98
  • Spine Width: 5 mm
  • Width: 189 mm
  • ISBN-10: 115052801X
  • Publisher Date: 01 Jan 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 191 gr


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Uses, Tests for Purity and Preparation of Chemical Reagents; Employed in Qualitative, Quantitative, Volumetric, Docimastic, Microscopic and Petrographic Analysis, with a Supplement on the Use of the Spectroscope
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