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- W1972503399 abstract "Densities of {xCH3OH+(1−x)H2O} relative to water were measured in a vibrating-tube densimeter at the temperatures (323, 373, 423, 473, 523, and 573) K and at pressures of 7.0 MPa and 13.5 MPa. Excess molar volumesVmEfor {xCH3OH+(1−x)H2O} were calculated from the experimental densities for the mixtures, using accurate equations of state for water and methanol. The data were treated with a modified corresponding-state model based on the properties of pure water. An empirical function was used to fit small differences between the compression factors of {xCH3OH+(1−x)H2O} and the compression factor of H2O at the same reduced temperature and the same reduced pressure. The corresponding-states treatment reproduces the measured densities to within the experimental uncertainty of 0.4 kg · m−3at all of the temperatures and pressures studied, except atT=573 K andp=13.5 MPa. The densities, excess molar volumes, partial molar volumes, isothermal compressions, and cubic expansion coefficients from the model are consistent with the limited literature data available. The behaviour ofVmEatT=573.6 K andp=13.7 MPa indicates either a very narrow region of (vapour+liquid) phase separation, or near-critical behaviour atx≈0.44 with the critical pressurepc≤13.5 MPa." @default.
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- W1972503399 date "1997-03-01" @default.
- W1972503399 modified "2023-09-26" @default.
- W1972503399 title "Excess molar volumes and densities of (methanol+water) at temperatures between 323 K and 573 K and pressures of 7.0 MPa and 13.5 MPa" @default.
- W1972503399 doi "https://doi.org/10.1006/jcht.1996.0145" @default.
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