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azeotrope |
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azeotrope [əˈziːəˌtrəʊp] n (Chemistry / Elements & Compounds) a mixture of liquids that boils at a constant temperature, at a given pressure, without change of composition [from a-1 + zeo-, from Greek zein to boil + -trope] azeotropic [ˌeɪzɪəˈtrɒpɪk] adj How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Aliquots of the samples underwent azeotropic distillation with methanol and evaporation under a nitrogen stream. Thin layer chromatography and UV spectroscopy of the azeotropic extracts of the NR compounds showed 60-75% of the original quinonediimine converted to the corresponding p-phenylene diamine (PPD). The good news at the conference was that several new "ozone-friendly" blowing agents--including fluoroiodocarbons, azeotropic mixtures, and liquid HFCs--are in development. |
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