Almost invariably a small precipitate soon shows itself, which, if fine grained and nonadherent to the glass, may be regarded as pure calcium oxalate; otherwise it contains, or may largely consist of, magnesium oxalate. It is in that case to be collected,... The Analysis of Silicate Ad Carbonate Rocks - Seite 109von William Francis Hillebrand - 1907 - 200 SeitenVollansicht - Über dieses Buch
| 1901 - 392 Seiten
...hours if necessary. Almost invariably a small precipitate soon shows itself, which if fine-grained and non-adherent to the glass may be regarded as pure...re-precipitated. Its final weight, averaging perhaps one-half milligrm., is to be added to that of the lime already found, and subtracted as tricalcium phosphate... | |
| 1898 - 356 Seiten
...re-solution and re-precipitation after ignition, and its weight, averaging one-half milligrm., is then added to that of the lime already found, and subtracted as tricalcium phosphate from that of the magnesium pyrophosphate, in order to arrive at the true figure for magnesium. This... | |
| 1896 - 1020 Seiten
...re-solution and reprecipitation after ignition, and its weight, averaging one-half milligram, is then added to that of the lime already found, and subtracted as tricalcium phosphate from that of the magnesium pyrophosphate, in order to arrive at the true figure for magnesium. This... | |
| Frank Wigglesworth Clarke, William Francis Hillebrand - 1897 - 342 Seiten
...re-solntiou and reprecipitation after ignition, and its weight, averaging one-half milligram, is then added to that of the lime already found, and subtracted as tricalcium phosphate from that of the magnesium pyrophosphate, in order to arrive at the true figure for magnesium. This... | |
| Marcus Baker - 1900 - 350 Seiten
...twelve hours if necessary. Almost invariably a small precipitate soon shows itself, which if finegrained and nonadherent to the glass may be regarded as pure...already found, and subtracted as tricalcium phosphate from that of the magnesium pyrophosphate in order to arrive at the true figure for magnesia. This separation,... | |
| 1907 - 874 Seiten
...alkalinity, and then acetic acid, drop by drop, till the solution, which should measure 10 to 30 cm.« and not be hot, clears. It now and then happens that...the magnesium pyrophosphate, in order a A pink color o( varying intensity almost invariably becomes apparent as the mass approaches dryness, a most delicate... | |
| Henry Gannett - 1906 - 644 Seiten
...alkalinity, and then acetic acid, drop by drop, till the solution, which should measure 10 to 30 cm.« and not be hot, clears. It now and then happens that...that of the magnesium pyrophosphate, in order « A pink color of varying intensity almost invariably becomes apparent as the mass approaches dryneaa,... | |
| Samuel Stinson Gannett, David Henry Baldwin - 1910 - 490 Seiten
...it may be filtered, ignited, and weighed as calcium oxide. Its weight, averaging less than 0.5 mg., is to be added to that of the lime already found and...from that of the magnesium pyrophosphate, in order to arrive at the true figure for magnesia. The alcoholic filtrate is to be evaporated, ignited to destroy... | |
| Geological Survey (U.S.) - 1910 - 252 Seiten
...it may be filtered, ignited, and weighed as calcium oxide. Its weight, averaging less than 0.5 mg., is to be added to that of the lime already found and...from that of the magnesium pyrophosphate, in order to arrive at the true figure for magnesia. The alcoholic filtrate is to be evaporated, ignited to destroy... | |
| William Francis Hillebrand - 1910 - 252 Seiten
...it may be filtered, ignited, and weighed as calcium oxide. Its weight, averaging less than 0.5 mg., is to be added to that of the lime already found and...from that of the magnesium pyrophosphate, in order to arrive at the true figure for magnesia. The alcoholic filtrate is to be evaporated, ignited to destroy... | |
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