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azeotrope |
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azeotrope /azeo·trope/ (a´ze-o-trōp″) a mixture of two substances that has a constant boiling point and cannot be separated by fractional distillation.azeotrop´ic
azeotrope a mixture of two substances that has a constant boiling point and cannot be separated by fractional distillation. 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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