Purification and characterization of the indicator calmagite | Zendy

Byron Kratochvil | Zendy; James Nolan | Zendy; Frederick F. Cantwell | Zendy; Robert B. Fulton | Zendy

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Purification and characterization of the indicator calmagite

Author(s) -

Byron Kratochvil,

James Nolan,

Frederick F. Cantwell,

Robert B. Fulton

Publication year - 1981

Publication title -

canadian journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.323

H-Index - 68

eISSN - 1480-3291

pISSN - 0008-4042

DOI - 10.1139/v81-365

Subject(s) - chemistry , chromatography , adsorption , titration , column chromatography , displacement chromatography , solvent , solvent extraction , thin layer chromatography , extraction (chemistry) , ionization , conjugate , molar mass , ion , chromatography column , inorganic chemistry , organic chemistry , polymer , mathematical analysis , mathematics

A scheme for the purification of the azo dye calmagite is described which involves solvent extraction, column partition chromatography, and adsorption chromatography on a nonpolar adsorbent. The final product, analyzed by thin-layer chromatography and by acid–base and ion-pair titrations, is of >99% purity. Molar absorptivities and acid ionization constants are reported for the conjugate species.

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