 | United States. Bureau of Chemistry - 1894 - 1004 Seiten
...repeated a third time, after which the residue is brought upon the filter and thoroughly washed, first with hot water, then with a little dilute hydrochloric acid, and finally with hot water uutil free from chloride. The gooch and contents are dried to constant weight at 110-, and the combined... | |
 | Harvey Washington Wiley - 1895 - 350 Seiten
...as before, a second and a third time, and finally brought upon the felt and thoroughly washed, first with hot water, then with a little dilute hydrochloric acid, and finally with hot water until free of chlorids. The residue in the gooch is dried at no°to constant weight, giving the carbon... | |
 | Association of Official Agricultural Chemists (U.S.) - 1899 - 96 Seiten
...repeated a third time, after which the residue is brought upon the filter and thoroughly washed, first with hot water, then with a little dilute hydrochloric acid, and finally with hot water until free from chlorids. The gooch and contents are dried to constant weight at 110°, and the combined... | |
 | Charles Frederick Sidener - 1904 - 72 Seiten
...water. Treat the residue on the filter with a hot solution of potassium hydrate of II specific gravity. Wash thoroughly with hot water, then with a little...hydrochloric acid and finally with hot water. Burn the carbon with chromic and sulphuric acids. See page 41. A very satisfactory result may be obtained as follows:... | |
 | Howard Van Fleet Furman - 1908 - 544 Seiten
...(sp. gr. 1.1o), which will remove * Bla1r, Chem1cal Analysis of Iron, Sixth Edition, page 175. silica (as the silicon is all oxidized to silica there will...water, then with a little dilute hydrochloric acid, and f1nally with hot water. After the carbon is thoroughly washed it is transferred to the decomposing... | |
 | United States. Bureau of Chemistry - 1908 - 300 Seiten
...the process a third time, after which bring the residue upon the filter and thoroughly wash, first with hot water, then with a little dilute hydrochloric acid, and finally with hot water until free from chlorids. Dry the gooch and contents to constant weight at 110° C., thus determining... | |
 | Association of Official Analytical Chemists. Committee on Revision of Methods - 1910 - 304 Seiten
...the process a third time, after which bring the residue upon the filter and thoroughly wash, first with hot water, then with a little dilute hydrochloric acid, and finally with hot water until free from chlorids. Dry the gooch and contents to constant weight at 110° C., thus determining... | |
 | 1917 - 972 Seiten
...thoroughly with hot water. It is treated with hot caustic solution (sp.gr., 1.1), washed thoroughly again with hot water, then with a little dilute hydrochloric acid, and finally with hot water. The carbon is now burned by one of the procedures given — the oxidation in the combustion furnace... | |
 | Andrew Alexander Blair - 1918 - 334 Seiten
...wash thoroughly with hot water. Treat the residue on the filter with hot caustic potash solution, 1.1 sp. gr. (as the silicon is all oxidized to silica...obtained to carbon, and call the result graphite.\ * Trans. Inst. Min. Engineers, iii. 42. DETERMINATION OF COMBINED CARBON. Indirect Method. Having determined... | |
 | Association of Official Analytical Chemists - 1920 - 438 Seiten
...before. Repeat the process again, then transfer the residue to the Gooch filter, wash thoroughly, first with hot water, then with a little dilute hydrochloric acid, and finally with hot water until free from chlorids. Dry the filter and contents to constant weight at 1 10°C. to determine the... | |
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After incineration the loss in weight gives the carbon. It is advisable to examine the residue under the microscope to ascertain if it is really sand. 