<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0187-893X</journal-id>
<journal-title><![CDATA[Educación química]]></journal-title>
<abbrev-journal-title><![CDATA[Educ. quím]]></abbrev-journal-title>
<issn>0187-893X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Química]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-893X2016000200133</article-id>
<article-id pub-id-type="doi">10.1016/j.eq.2015.11.005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Utilización del colorante índigo en el laboratorio docente de Química Orgánica]]></article-title>
<article-title xml:lang="en"><![CDATA[Use of indigo dye in Organic Chemistry teaching laboratory]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saura]]></surname>
<given-names><![CDATA[A. Vanessa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galindo]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universitat Jaume I Departamento de Química Inorgánica y Orgánica ]]></institution>
<addr-line><![CDATA[Castellón ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2016</year>
</pub-date>
<volume>27</volume>
<numero>2</numero>
<fpage>133</fpage>
<lpage>138</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-893X2016000200133&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-893X2016000200133&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-893X2016000200133&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[El colorante índigo es uno de los primeros ejemplos de tinción a la cuba. La reducción del colorante a su forma soluble (leucoíndigo) es el paso crítico del proceso. Se ha ensayado un procedimiento que mejora los resultados globales para la tinción con este colorante a nivel didáctico en una práctica de laboratorio de Química Orgánica. La innovación introducida consiste en el empleo de un balón de fondo redondo de dimensiones reducidas y el uso de un globo y una aguja para liberar la sobrepresión interior. En comparación con el procedimiento tradicional, el nuevo método permite la reducción a temperaturas inferiores (30 °C vs. 66 °C) y un teñido más homogéneo de las telas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[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.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Indigo]]></kwd>
<kwd lng="en"><![CDATA[Synthetic dyes]]></kwd>
<kwd lng="en"><![CDATA[Vat dyeing]]></kwd>
<kwd lng="en"><![CDATA[Laboratory practice]]></kwd>
<kwd lng="es"><![CDATA[Índigo]]></kwd>
<kwd lng="es"><![CDATA[Colorantes sintéticos]]></kwd>
<kwd lng="es"><![CDATA[Tinción a la cuba]]></kwd>
<kwd lng="es"><![CDATA[Práctica de laboratorio]]></kwd>
</kwd-group>
</article-meta>
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