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Thermodynamics of vaporization of some alkyladamantanes

โœ Scribed by R.M. Varushchenko; ; L.L. Pashchenko; ; A.I. Druzhinina; ; A.V. Abramenkov; ; A.A. Pimersin

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
288 KB
Volume
33
Category
Article
ISSN
0021-9614

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โœฆ Synopsis

The boiling temperature of 1,3-dimethyladamantane was measured by comparative ebulliometry over the pressure range 6 < (p/kPa) < 100. The temperature dependencies of saturation vapour pressure and enthalpy of vaporization, and the normal boiling temperature, T b = 476.53 K, were derived. The enthalpy of vaporization, g l H o m = (49.21 ยฑ 0.2) kJ โ€ข mol -1 , was calorimetrically measured at T = 308.15 K. The experimental and calculated g l H o

m values were found to agree within the error limits. Densities of the liquid phase were measured at the temperatures (293.15, 298.15, and 303.15) K. The experimental vapour pressures of 1,3-dimethyladamantane and of the previously studied 1,3,5trimethyladamantane were extrapolated to the regions of the liquid phases from the triple to the critical temperatures.

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