N-Methyldiphenylamin-p-sulfos�ure als Redoxindikator

Knop, Judy; Kubelková-Knopová, O.

doi:10.1007/bf01460752

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Analytisches1

Indicators For Oxidation-reduction Reactions1

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1949

1976

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Cited by 22 publications

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“…Der Vanadingehalt wurde aus dem Glührückstand sowie zur Kontrolle ferrometrisch mit Na-diphenylamin-p-sulfonat als Redoxindikator 17 …”

Section: Analytischesunclassified

Über Tetraalkylammonium-polyvanadate.

Fuchs

Mahjour

Palm

1976

Zeitschrift Für Naturforschung B

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In the reaction of V2O5 with aqueous or alcoholic solutions of tetraalkylammoniumhydroxide the orange decavanadates (NR4)3H3Vio028; (NR4)4H2VIO028> (NR4)5HVio028, (NR4)6VLO028 and colourless metavanadates can be obtained. The tetrabutylammoniumsalt [N(C4H9)4]3HV40i2 is the first known metavanadate with discrete polyanion. Its molecular weight was determined by vapor pressure osmometry in chloroform. The Raman spectrum is identical with the spectrum of a sodium metavanadate solution. The vibration spectra of the compounds are discussed and partial assignments were made.

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“…Der Vanadingehalt wurde aus dem Glührückstand sowie zur Kontrolle ferrometrisch mit Na-diphenylamin-p-sulfonat als Redoxindikator 17 …”

Section: Analytischesunclassified

Über Tetraalkylammonium-polyvanadate.

Fuchs

Mahjour

Palm

1976

Zeitschrift Für Naturforschung B

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“…The color changes were found to be reversible provided that solutions containing the unstable oxidized forms were not allowed to stand for too long a period of time. Knop and Kubelkova (15) introduced n-methyl diphenylamine-p-sulfonic acid as a redox indicator. The mechanism of the color change is comparable to that of diphenylamine; the color of the oxidized form of the indicator is bright red.…”

Section: Indicators For Oxidation-reduction Reactionsmentioning

confidence: 99%