Abstract
The liquid–vapor phase equilibria in binary systems containing 1,3-dimethylpyrazole and 1,5-dimethylpyrazole are investigated. On the basis of the results, the relative volatility, the minimum and working numbers of theoretical plates, and the minimum and working reflux ratios are calculated, with a view to the production of individual isomers (>99% purity). The results are experimentally confirmed. It proves possible to separate 1,3-dimethylpyrazole and 1,5-dimethylpyrazole by rectification.
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Original Russian Text © V.V. Rusak, M.I. Zaretsky, V.V. Semenov, E.M. Chartov, B.I. Ugrak, Z.N. Nysenko, 2015, published in Koks i Khimiya, 2015, No. 7, pp. 48–52.
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Rusak, V.V., Zaretsky, M.I., Semenov, V.V. et al. Extracting 1,3-dimethylpyrazole and 1,5-dimethylpyrazole from binary industrial mixtures. Coke Chem. 58, 275–278 (2015). https://doi.org/10.3103/S1068364X15070078
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DOI: https://doi.org/10.3103/S1068364X15070078