| Autor: |
Gowda, H.Sanke, Mohan, B.M., Ahmed, S.Akheel |
| Zdroj: |
Talanta; December 1980, Vol. 27 Issue: 12 p1084-1086, 3p |
| Abstrakt: |
Profenamine hydrochloride, fluphenazine dihydrochloride, trifluopromazine hydrochloride, cyamepromazine maleate, perphenazine dihydrochloride and mepazine hydrochloride are proposed as redox indicators in the titration of hydroquinone, metol and ascorbic acid with chloramine-T and chloramine-B in sulphuric, hydrochloric and acetic acid media. They give a sharp reversible colour change at the equivalence point. A simple but accurate method for the determination of hydroquinone, metol and ascorbic acid is described. The conditional potentials and molar absorptivities of the indicators and redox potential of chloramine-B are reported. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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