Results 251 to 260 of about 202,313 (303)
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Canadian Metallurgical Quarterly, 1984
AbstractThe sublimation pressure of pure arsenic was measured by a transportation method in the temperature range 675–730 K. The specimen and carrier argon gas were carefully prepared to eliminate oxygen. The arsenic tetramer (As4) was assumed to be the dominant gaseous species evaporated from pure solid arsenic.The vapour pressure for the process As(s)
R. Celmer, M. Yamamoto, J. M. Toguri
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AbstractThe sublimation pressure of pure arsenic was measured by a transportation method in the temperature range 675–730 K. The specimen and carrier argon gas were carefully prepared to eliminate oxygen. The arsenic tetramer (As4) was assumed to be the dominant gaseous species evaporated from pure solid arsenic.The vapour pressure for the process As(s)
R. Celmer, M. Yamamoto, J. M. Toguri
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Pesticide Science, 1986
AbstractThe vapour pressures of the separate isomers of permethrin have been determined over a range of temperatures by two laboratories using different versions of the gas saturation method. A statistical analysis of the sets of data from the two laboratories shows no significant differences for the cis isomers but a small difference in the 20°C ...
David Wells +2 more
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AbstractThe vapour pressures of the separate isomers of permethrin have been determined over a range of temperatures by two laboratories using different versions of the gas saturation method. A statistical analysis of the sets of data from the two laboratories shows no significant differences for the cis isomers but a small difference in the 20°C ...
David Wells +2 more
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Vapour pressure of methylfluoride
Physica, 1948Abstract The vapour pressure of CH 3 F has been measured between — 110°C and + 15°C. The temperature was measured with a Pt-resistance thermometer, the pressure up to 4 atm. against a mercury column and for higher pressures with a pressure balance. A diagramatical sketch of the apparatus used is given in fig. 1.
A Michels, T Wassenaar
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High pressure vapour-liquid equilibrium. III
Fluid Phase Equilibria, 1977Abstract Wichterle, I., 1978. High pressure vapour-liquid equilibrium. II. Phenomenological description. Part 2. Fluid Phase Equilibria, 1: 225–245. A phenomenological description of fluid systems (except for l-g phase equilibrium) is presented.
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Water Vapour Pressure in Expired Air
Respiration, 1974The water vapour pressure in the expired air of normal subjects during rest and exercise was measured by a mass spectrometer. The mean vapour pressure was found to be 37.9 mm Hg during tidal breathing and 39.7 mm Hg after a vital capacity manoeuvre. The pressure was reduced to 36.1 mm Hg during exercise.
W, Liese, W J, Warwick, G, Cumming
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New vapour-pressure measurements and a new rational vapour-pressure equation for oxygen
The Journal of Chemical Thermodynamics, 1976Abstract New experimental vapour pressures of oxygen are presented for the temperature range from 90 K up to the critical temperature Tc = 154.581 K. In comparison with these results, oxygen vapour-pressure measurements reported in the literature have been critically evaluated with the aim of obtaining a data set that represents the “true” vapour ...
W. Wagner, J. Ewers, W. Pentermann
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Nature, 1931
IN considering the effect of polarity on the vapour pressure and association of a liquid, a simple case is its influence on the partial vapour pressures of a polar liquid in its binary mixtures with a non-polar liquid, which, except for lack of polarity, should preferably be closely related in chemical structure to the polar liquid.
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IN considering the effect of polarity on the vapour pressure and association of a liquid, a simple case is its influence on the partial vapour pressures of a polar liquid in its binary mixtures with a non-polar liquid, which, except for lack of polarity, should preferably be closely related in chemical structure to the polar liquid.
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Measurement of vapour pressures of ionic liquids and other low vapour pressure solvents
Green Chemistry, 2009The vapour pressures of several ionic liquids, liquid polymers and derivatives of glycerol were investigated by thermogravimetric analysis (TGA). The experimental method is described and discussed. Vapour pressure data for various solvents with low vapour pressures are reported at 100–120 °C. The thermogravimetric method for vapour pressure measurement
Aschenbrenner, O. +3 more
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Journal of Scientific Instruments, 1936
The apparatus determines the moisture content of the air directly in terms of the aqueous vapour pressure thereof. It is a modification of the chemical hygrometer. An air sample of fixed volume is exposed to a chemical drying agent and the consequent reduction in pressure observed.
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The apparatus determines the moisture content of the air directly in terms of the aqueous vapour pressure thereof. It is a modification of the chemical hygrometer. An air sample of fixed volume is exposed to a chemical drying agent and the consequent reduction in pressure observed.
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Vapour pressure of 2,4-pentanedione
The Journal of Chemical Thermodynamics, 1985Abstract Vapour pressures of 2,4-pentanedione in the temperature range 307.15 to 414.45 K have been determined ebulliometrically. These results have been correlated using the Antione equation, Abrams, Massaldi, and Prausnitz's equation, and Chebyshev polynomials. The results are compared with values reported in literature.
A. Raviprasad, K. Venkateswara Rao
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