Purification procedures for synthetic dyes: Part 1—dry column chromatography

Freeman, Harold S.; Williard, C. S.; Hsu, Whei-Neen

doi:10.1016/0143-7208(86)80008-0

Cited by 6 publications

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“…In two previous papers from these laboratories we described (1,2) the results of our evaluation of dry column chromatography ( 3 ) and countercurrent chromataography (4)(5)(6)(7)(8) as procedures for the purification of gram quantities of synthetic dyes. Our interest in CCC as a method for the purification of dyes was heightened by our initial experiences with the procedure ( 2 ) , the paper of Fales and co-workers (10) in which the separation of the components of Methyl Violet 2B is described, and by some interesting results we were obtaining from the use of dialysis in NHMe I…”

Section: Introductionmentioning

confidence: 99%

Purification of Some Water Soluble Azo Dyes by High-Speed Countercurrent Chromatography

Freeman¹,

Hao²,

McIntosh³

et al. 1988

Journal of Liquid Chromatography

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High-speed countercurrent chromatography (CCC) has been used to prepare preparative amounts of pure magenta azo dyes by a method involving the continuous extraction of an aqueous solution of the dyes by a suitable mobile phase. normal way of running CCC separations permits both the removal of the impurities from the desired color component and an increase in the quantity of dye that can be purified in a single experiment. This slight variation in the INTRODUCTION

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