1901
DOI: 10.1002/ardp.19012390705
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Ueber den amerikanischen Styrax

Abstract: Die trockene Destillation lieferte Phenol, Kresol, Benzol, Toluol Brom lieferte bromhaltige amorphe Derivate. Acetylierungs-und Benzoylierungsversuche verliefen erfolglos. Durch Einwirkung von Hydroxylamin und von Phenylhydrazin wurden keine stickstoff haltigen KZirper gebildet. Durch Behandlung mit Salpetersgure t r a t sowohl Oxydation als Nitrierung ein. Es wurden Pikrin-und Oxalslure neben eioem stickstoff haltigen KZirper erhalten. Oxydationsversuche ergaben die Bildung von o-Phtalsgure, einer in Wasser u… Show more

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“…Tschirch (170) recommends weighing the phosphorus as magnesium ammonium phosphate hexahydrate after treating with acetone and vacuum drying. With the aid of the Chevenard thermobalance (29), Duval (40) found that complete conversion of magnesium ammonium phosphate to magnesium pyrophosphate-the form in which phosphorus is usually weighed in its gravimetric determination-can be accomplished at 285°C ., as compared with the previously reported temperature of 477°C.…”
Section: Phosphorusmentioning
confidence: 99%
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“…Tschirch (170) recommends weighing the phosphorus as magnesium ammonium phosphate hexahydrate after treating with acetone and vacuum drying. With the aid of the Chevenard thermobalance (29), Duval (40) found that complete conversion of magnesium ammonium phosphate to magnesium pyrophosphate-the form in which phosphorus is usually weighed in its gravimetric determination-can be accomplished at 285°C ., as compared with the previously reported temperature of 477°C.…”
Section: Phosphorusmentioning
confidence: 99%
“…For the analysis of phosphate-containing solutions Edwards and Aleoek (42) remove copper and zinc and precipitate the oxalate in the presence of tartaric acid, with subsequent ignition to the oxide. Tschirch (170) gives a procedure for determining calcium by weighing as the oxalate after treating with acetone and vacuum drying. When calcium oxalate is heated, calcium carbonate is the stable product at 420°to 660°C ., while conversion to the oxide is complete at 8400 C. (40).…”
Section: Calciummentioning
confidence: 99%
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