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A calorimetric study of the specific heat of cytisine and enthalpies of its dissolution in water and ethanol

A calorimetric study of the specific heat of cytisine and enthalpies of its dissolution in water... The enthalpies of dissolution of an alkaloid cytisine at dilutions [mole of cytisine : moles of water; mole of cytisine : moles of 96% ethanol] equal to 1 : 9000, 1 : 18 000, and 1 : 36 000 were measured by means of calorimetry. The experimental data obtained were used to calculate the standard enthalpies of dissolution of cytisine in infinitely diluted (standard) aqueous and ethanolic solutions. The enthalpies of combustion, melting, and crystallization of cytisine were calculated. The method of dynamic calorimetry in the temperature range 198–298.15 K was applied to study the specific heat of the alkaloid, and an equation describing the dependence C p o ∼ f(T) was derived. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

A calorimetric study of the specific heat of cytisine and enthalpies of its dissolution in water and ethanol

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References (11)

Publisher
Springer Journals
Copyright
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
DOI
10.1007/s11167-005-0193-3
Publisher site
See Article on Publisher Site

Abstract

The enthalpies of dissolution of an alkaloid cytisine at dilutions [mole of cytisine : moles of water; mole of cytisine : moles of 96% ethanol] equal to 1 : 9000, 1 : 18 000, and 1 : 36 000 were measured by means of calorimetry. The experimental data obtained were used to calculate the standard enthalpies of dissolution of cytisine in infinitely diluted (standard) aqueous and ethanolic solutions. The enthalpies of combustion, melting, and crystallization of cytisine were calculated. The method of dynamic calorimetry in the temperature range 198–298.15 K was applied to study the specific heat of the alkaloid, and an equation describing the dependence C p o ∼ f(T) was derived.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Mar 22, 2005

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