{"title":"Utilización del colorante índigo en el laboratorio docente de Química Orgánica","authors":"A. Vanessa Saura, Francisco Galindo","doi":"10.1016/j.eq.2015.11.005","DOIUrl":null,"url":null,"abstract":"<div><p>Indigo is one of the first examples of vat dyeing, being the reduction of the dye to its soluble form (<em>leuco-indigo</em>) the critical step of that process. A new method to address such reduction reaction has been tested which improves the overall results for the staining with this dye, at a didactic level in an Organic Chemistry laboratory practice. The innovation introduced consists of using a small sized round-bottom flask along with a balloon and a needle to release the inner overpressure. Compared to the traditional process, the new method allows for the reduction at lower temperatures (30<!--> <!-->°C vs. 66<!--> <!-->°C) and a more homogeneous fabric dyeing.</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"27 2","pages":"Pages 133-138"},"PeriodicalIF":0.0000,"publicationDate":"2016-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.11.005","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Educacion Quimica","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0187893X1500097X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Social Sciences","Score":null,"Total":0}
引用次数: 2
Abstract
Indigo is one of the first examples of vat dyeing, being the reduction of the dye to its soluble form (leuco-indigo) the critical step of that process. A new method to address such reduction reaction has been tested which improves the overall results for the staining with this dye, at a didactic level in an Organic Chemistry laboratory practice. The innovation introduced consists of using a small sized round-bottom flask along with a balloon and a needle to release the inner overpressure. Compared to the traditional process, the new method allows for the reduction at lower temperatures (30 °C vs. 66 °C) and a more homogeneous fabric dyeing.
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