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Thermodynamic properties of dimethyl phthalate along the (vapour + liquid) saturation curve

✍ Scribed by Vladislav Roháč; Jana E. Musgrove; Květoslav Ružička; Vlastimil Ružička; Milan Zábranský; Karel Aim

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
178 KB
Volume
31
Category
Article
ISSN
0021-9614

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✦ Synopsis

Measurements of vapour pressure p, density ρ, and molar heat capacity C p,m are reported for dimethyl phthalate in the liquid phase. The methods of comparative ebulliometry, vibrating-tube densimetry, and heat conduction calorimetry were employed to determine these properties. A simultaneous correlation of vapour pressures and of enthalpy of vaporization vap H m was used to generate parameters for the Cox equation. Vapour pressure and enthalpies of vaporization derived from the fit are reported at the triple point temperature T t , at T = 298.15 K, and at the normal boiling temperature. For inclusion into program packages, parameters of the Antoine equation were calculated by fitting the ebulliometric vapour pressures. A comparison of all measured properties with literature data is presented.

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