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Enthalpies of dissolution of flavonoids in 96% ethanol at 25°C

  • Physical Chemistry of Solutions
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Abstract

The enthalpies of dissolution of pinostrobin hydrazone C16H16N2O3, (N-ethyl-2-(5-hydroxy-7-methoxy-2-phenylchroman-4-ylidene)hydrazino-1-carbothiamide) thiosemicarbazone C19H21N3O3S, salvigenine C18H16O6, and pinostrobin-2-(5-hydroxy-7-methoxy-2-phenylchroman-4-ylidene)-N-phenylhydrazino- 1-carbothiamide thiosemicarbazide C23H21N3O3S are measured on a DAK-I-IA calorimeter at flavonoid: ethanol molar ratios of 1 : 9000, 1 : 18000, and 1 : 36000. Their standard enthalpies of dissolution in 96% ethanol are calculated from the obtained data. Their standard enthalpies of combustion, melting, and formation are estimated by approximate methods.

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Authors and Affiliations

  1. Abishev Chemical and Metallurgical Institute, Karaganda, 100009, Kazakhstan

    Sh. B. Kasenova, B. K. Kasenov & Zh. I. Sagintaeva

  2. International Research and Production Holding Fitokhimiya, Karaganda, 100000, Kazakhstan

    G. K. Mukusheva, P. Zh. Zhanymkhanova, P. Zh. Zhanymkhanova & S. M. Adekenov

Authors
  1. Sh. B. Kasenova
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  2. G. K. Mukusheva
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  3. B. K. Kasenov
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  4. Zh. I. Sagintaeva
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  5. P. Zh. Zhanymkhanova
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  6. P. Zh. Zhanymkhanova
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  7. S. M. Adekenov
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Corresponding author

Correspondence to B. K. Kasenov.

Additional information

Original Russian Text © Sh.B. Kasenova, G.K. Mukusheva, B.K. Kasenov, Zh.I. Sagintaeva, P.Zh. Zhanymkhanova, G.M. Baisarov, S.M. Adekenov, 2015, published in Zhurnal Fizicheskoi Khimii, 2015, Vol. 89, No. 10, pp. 1602–1605.

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Kasenova, S.B., Mukusheva, G.K., Kasenov, B.K. et al. Enthalpies of dissolution of flavonoids in 96% ethanol at 25°C. Russ. J. Phys. Chem. 89, 1804–1807 (2015). https://doi.org/10.1134/S0036024415090162

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  • DOI: https://doi.org/10.1134/S0036024415090162

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