L 061 Clinic and Angiographic Characteristic of 9121 Patients Submited a Cardiac Catheterism

Szuster, Eduardo; Albuquerque, Gustavo Oliveira de; Marinho, Gustavo Eugênio Martins; Carvalho, Guilherme de; Barbosa, Mauricio R.; Correa, Luiz Carlos Teles; Souza, Antonio Cesar de; Peredo, Mario Osvaldo Vrandecic; Vrandecic, Erika Correa

doi:10.1016/s1567-5688(07)72005-6

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“…In spite of the long-term use of this dye around the world, the structure of its complex is not clearly published in the Colour Index [12]. CI Acid Blue 193 (AB193) and CI Acid Black 194 (AB194) are chromium(III) complexes of azo dyes, where a central metal chromium(III) is associated with two organic tridentate ligands, which are the derivatives of O,O 0 -dihydroxyazonaphthalene [13,14]. They occur as a mixture of isomers that differ in colour.…”

Section: Introductionmentioning

confidence: 99%

Dyeing properties of CI Acid Blue 193 and the non‐equivalent properties of CI Acid Black 194 produced by different manufacturers

Wojciechowski

Szuster²,

Rutowicz³

et al. 2014

Coloration Technology

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This paper presents the results of research conducted into the colour properties of commercial metal complex dyes CI Acid Blue 193 and CI Acid Black 194. Three chromium(III) complexes with different colours were identified using thin-layer chromatographic analysis and then separated by preparative chromatography. It was found that colour differences of the examined dyes depend on the ratio of the three components in CI Acid Blue 193 and CI Acid Black 194, and that these differences are typical for each of the commercial products. The colour differences of the components were expressed as DS, calculated as the difference in the areas under the absorption curve of the individual components in the range 400-700 nm after spectrum normalisation. The UV-vis spectroscopic and CIELAB colorimetric properties (at 1% owf on polyamide) of eleven samples of CI Acid Black 194 were investigated. From these results, the proportions of the three components were derived. Theoretically, dyes sold under the same CI name are interchangeable. In practice, the obtained colour of the dyed material is different owing to the difference in composition namely the ratio of the components in the tested dyes. Consequently, the result of polyamide dyeing with the studied dyes CI Acid Blue 193 and CI Acid Black 194 is a redder or greener hue. It has been concluded from these findings that the production of identical dyeings may be impossible when dyes from different sources are employed.

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Section: Introductionmentioning

confidence: 99%