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acetic acid acid solution acidified added addition alcohol alkali alloys alumina aluminum ammonia ammonium hydroxide amount analysis antimony apparatus arsenic barium bath beaker bismuth bottle bromine burette cadmium calcium carbon dioxide Chem chloric acid chloride chromate chromium cobalt color combustion concentrated cooled copper crucible decomposed determined dissolved drop evaporated to dryness excess expelled ferric ferrous filtered filtrate flask fluoride fumes fusion Gooch gram gravimetric heated to boiling hot water hydrochloric acid hydrogen sulphide ignited insoluble iodine iron lead liquid magnesium manganese mercury metal method minutes mixture neutral nickel nitric acid oxalate oxide permanganate peroxide phosphate pipette placed platinum portion potassium iodide precipitate present procedure reaction reagent reduced removed residue salt sample saturated Separation silica silver nitrate sodium carbonate sodium hydroxide solu soluble solution containing sp.gr strontium sulphate sulphuric acid temperature thiosulphate tion titanium titrated tube volume volumetric washed weighed yellow zinc
Page 651 - The precipitate shall be dissolved in a small quantity of hot hydrochloric acid, the solution diluted to about 100 cc, 1 cc of a saturated solution of sodium-ammonium-hydrogen phosphate added, and ammonia drop by drop, with constant stirring, until the precipitate is again formed as described and the ammonia is in moderate excess. The precipitate shall then be allowed to stand about two hours, filtered and washed as before.
Page 909 - W. Mechanical Drawing 8vo, *4 oo Mitchell, CA, and Prideaux, RM Fibres Used in Textile and Allied Industries „ 8vo, *3 oo Modern Meteorology i2mo, i 50 Monckton, CCF Radiotelegraphy.
Page 649 - One-half gram of the finely-powdered substance is to be weighed out and, if a limestone or unburned mixture, strongly ignited in a covered platinum crucible over a strong blast for 15 minutes, or longer if the blast is not powerful enough to effect complete conversion to a cement in this time. It is then transferred to an evaporating dish, preferably of platinum for the sake of celerity in evaporation, moistened with enough water to prevent lumping, and 5 to 10 cc of strong HC1...
Page 905 - Lubricating Oils, Fats and Greases : Their Origin, Preparation, Properties, Uses and Analysis. 313 pages, with 65 illustrations. 8vo, cloth net, $3 . 00 Soaps. A Practical Manual of the Manufacture of Domestic, Toilet and other Soaps. Illustrated with 66 engravings. 8vo, cloth net, $5 . 00 Textile Soaps and Oils...
Page 649 - The dish is then covered and digestion allowed to go on for ten minutes on the bath, after which the solution is filtered and the separated silica washed thoroughly with water. The filtrate is again evaporated to dryness, the residue without further heating taken up with acid and water and the small amount of silica it contains separated on another filter paper. The papers containing the residue are transferred wet to a weighed platinum...
Page 642 - The cement is placed on the No. 200 sieve, which, with pan and cover attached, is held in one hand in a slightly inclined position and moved forward and backward about 200 times per...
Page 597 - ... seconds. Then allow the thermometer to hang quietly, with the bulb in the center of the mass, and observe the rise of the mercury. The highest point to which it rises is recorded as the titer of the fatty acids.
Page 905 - H. Exercises in Gas Analysis. Translated from the first German edition, with corrections and additions by the author, by Thomas Callan. 30 diagrams.