Purification and characterization of the indicator calmagite

Autor:	Robert B. Fulton, Byron Kratochvil, Frederick F. Cantwell, James Nolan
Rok vydání:	1981
Předmět:	Calmagite chemistry.chemical_compound Adsorption Chromatography chemistry Organic Chemistry General Chemistry Solvent extraction Catalysis
Zdroj:	Canadian Journal of Chemistry. 59:2539-2542
ISSN:	1480-3291 0008-4042
DOI:	10.1139/v81-365
Popis:	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.
Databáze:	OpenAIRE
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