Kosuke Watanabe

Orthobaric liquid densities of trichlorofluoromethane, dichlorodifluoromethane, chlorodifluoromethane, 1,1,2-trichlorotrifluoroethane, 1,2-dichlorotetrafluoroethane, and of the azeotropic mixture of (chlorodifluoromethane + chloropentafluoroethane) between 203 and 463 K

Abstract The orthobaric liquid densities of six halogenated hydrocarbons: trichlorofluoromethane (CCl 3 F), dichlorodifluoromethane (CCl 2 F 2 ), chlorodifluoromethane (CHClF 2 ), 1,1,2-trichlorotrifluoroethane (CCl 2 FCClF 2 ), 1,2-dichlorotetrafluoroethane (CClF 2 CClF 2 ), and of (0.6321CHClF 2 + 0.3679CClF 2 CF 3 ), an azeotropic mixture, have been measured. Measurements were carried out with a magnetic densimeter for temperatures from 203 K up to a temperature close to the critical. An accuracy of ±0.1 per cent except for the results at temperatures above 423 K was confirmed by examining the present measurements for orthobaric (liquid + gaseous) water. The temperature dependence of the orthobaric liquid density has been correlated analytically on the basis of the present results and the more reliable of the reported measurements critically evaluated by the present authors.

Experimental study of the p, V, T properties of water for temperatures in the range 323.15 to 773.15 K and pressures up to 200 MPa

Abstract The p , V , T properties of water have been measured by a constant-volume double-vessel apparatus over the ranges of conditions: of temperature 323.15 to 773.15 K, of pressure 1.673 to 195.165 MPa, and of specific volume 0.94444 to 31.66 cm 3 g −1 . The experimental uncertainties and reproducibility with respect to the specific volume were estimated to be less than 0.03 per cent and 0.01 per cent, respectively. The reported results are in good agreement with reliable data of earlier studies where they overlap.