1945
DOI: 10.1002/hlca.194502801125
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Etude critique des réactifs des cations. 16. Réactifs des cations du scandium

Abstract: Aceton-Hexan wurden Krystalle vom Smp. 82" (Hydrat ?) erhalten. Zur Analyse wurde 1 Stunde bei 0,Ol mm und 60° getrocknet und unmittelbar vor der Verbrennung im Hochvakuum geschmolzen. 3,494 mgSubst. gaben 9,852 mg CO, und 3,519 mg H,O C,,H,,O, (292,45) Ber. C 78,03 H 11,03% Gef. ,, 77J8 ,, 11,2704 Oxydation. 19,2 mg ~tiocholan-diol-3(c),l2(/l) (XIII) wurden in 0,66 em3 Eisessig gelost und mit 0,66 cm3 2-proz. Cr0,-Eisessiglosung versetzt. Nach 22 Stunden wurde die griinlich-braun gefarbte Losung wie ublich a… Show more

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“…CHEMICAL methods for determination of rubidium are difficult, because of the tedious procedures required to effect separations from other alkali metals. In fact no published procedure has been found for quantitative separation of cesium and rubidium (14)• Colorimetric methods also have not been found in the literature. Only spectrographic methods appear to have been used for determinations of the rubidium content of plant and animal tissues.…”
Section: Discussionmentioning
confidence: 99%
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“…CHEMICAL methods for determination of rubidium are difficult, because of the tedious procedures required to effect separations from other alkali metals. In fact no published procedure has been found for quantitative separation of cesium and rubidium (14)• Colorimetric methods also have not been found in the literature. Only spectrographic methods appear to have been used for determinations of the rubidium content of plant and animal tissues.…”
Section: Discussionmentioning
confidence: 99%
“…Numerous color reactions of scandium have been reported (1-5, ! ), 13, 14). Some of these reactions are applicable only for spot-test and microscopic techniques and are unsuitable for colorimetric determinations because of the formation of insoluble products and numerous interferences.…”
mentioning
confidence: 99%