Chemical Reagents: Their Purity and Tests; a New and Improved Text Based on and Replacing the Latest Edition of Krauch's "Die Prüfung Der Chemischen Reagentien Auf Reinheit,"D. Van Nostrand Company, 1907 - 250 стор. |
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CHEMICAL REAGENTS THEIR PURITY Carl Krauch,E. (Emanuel) Merck,Henry Schenck Попередній перегляд недоступний - 2016 |
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1:20 aqueous solution acetic acid acid sp acidulated adding barium chloride ammonia water ammonium oxalate solution ammonium sulphide solution anhydride barium chloride barium chloride solution barium sulphate blue color Calcium Chem color should develop colorless liquid concentrated sulphuric acid crystals dilute sulphuric acid Dissolve 1 gm easily soluble ether filter flask form on standing Heavy Metals hydrochloric acid hydrogen sulphide hydrogen sulphide water ignited insoluble iodine leave no weighable litmus paper magnesium Marsh apparatus methyl orange mixture molybdate nitric acid oxide peroxide phenolphthalein phosphate potassium carbonate potassium hydroxide potassium iodide potassium permanganate precipitate of barium precipitate should form PURITY Non-volatile Matter PURITY The tests Quantitative Determination red color shaking silver nitrate silver nitrate solution sodium carbonate sodium hydroxide sodium hydroxide solution soluble in alcohol soluble in water specific gravity standing twelve hours sulphate should form sulphuric acid TESTS OF PURITY water-bath weighable residue zinc Ztschr