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  • methanol  (3)
  • aromatic hydrocarbons  (2)
  • compressibility  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Thermal conductivity of fourteen liquids in the temperature range 298–373 K (1982)
    Springer
    International journal of thermophysics 3 (1982), S. 101-116 
    Details
    ISSN: 1572-9567
    Keywords: aromatic hydrocarbons ; cyclohexane ; n-alkanes ; phenyl halides ; thermal conductivity ; toluene ; transient hot-wire method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New experimental data on the thermal conductivity of 14 organic liquids at atmospheric pressure are presented in the temperature range from 25 to 100°C. The liquids measured are five n-alkanes (C6, C7, C8, C10, C12), cyclohexane, six aromatic hydrocarbons (benzene, ethylbenzene, o-, m-, p-xylenes, isopropylbenzene) and two phenyl halides (chloro-, bromobenzenes). The measurements were performed by a transient hot-wire method on a relative basis. The thermal conductivity of toluene, which was selected as a reference liquid, was determined on an absolute basis with another transient apparatus. The precision of the present experimental results is within ±1.2%. The uncertainty of the thermal conductivity values is estimated to be within ±2%; this includes the uncertainty of the values of toluene as the reference liquid. The experimental results for each liquid are represented satisfactorily by a linear equation in temperature. At a reduced temperature T/T c=0.5, thermal conductivity has a simple relation with the molar density for each homologous series of liquids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00503634
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  • 2
    Electronic Resource
    Electronic Resource
    Viscosity of methanol and 2-methyl-2-propanol mixtures under high pressures (1991)
    Springer
    International journal of thermophysics 12 (1991), S. 459-468 
    Details
    ISSN: 1572-9567
    Keywords: alcohols ; capillary viscometer ; methanol ; 2-methyl-2-propanol ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new capillary viscometer has been constructed and the viscosities of methanol, 2-methyl-2-propanol, and their mixtures have been measured at two temperatures, 303 and 323 K, and at pressures up to 30 MPa. Simple empirical equations are given to represent the pressure and composition dependences of the viscosity within the experimental uncertainty of ±2%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00502362
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Density and viscosity of linear perfluoropolyethers under high pressures (1989)
    Springer
    International journal of thermophysics 10 (1989), S. 857-870 
    Details
    ISSN: 1572-9567
    Keywords: compressibility ; density ; fluorocarbon oil ; free-volume equation ; high pressure ; perfluoropolyether ; specific volume ; Tait equation ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New experimental data on the density and viscosity of linear, unbranched perfluoropolyethers are presented at temperatures from 273 to 333 K and pressures up to 180 MPa. The measurements were carried out by a high-pressure burrette apparatus and a falling-cylinder viscometer. The uncertainties of the measurements are estimated to be less than 0.09% for the specific volume and 2.5% for the viscosity. The P-V data at each temperature are correlated satisfactorily by the Tait equation. The viscosity data are also analyzed and correlated with pressure or molar volume by several empirical and theoretical equations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00514481
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  • 4
    Electronic Resource
    Electronic Resource
    Volumetric behavior of pure alcohols and their water mixtures under high pressure (1987)
    Springer
    International journal of thermophysics 8 (1987), S. 47-70 
    Details
    ISSN: 1572-9567
    Keywords: alcohols ; aqueous mixtures ; butanols ; compressibility ; ethanol ; excess volume ; high pressure ; methanol ; propanols ; specific volume ; Tait equation ; water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The specific volumes of C1-C4 alcohols and binary mixtures of water with methanol, ethanol, 1-propanol, 2-propanol, and 2-methyl-2-propanol are presented as functions of temperature, pressure, and composition. The measurements were carried out using a modified Adams piezometer and a high-pressure burette method in a temperature range from 283.15 to 348.15 K at pressures up to 350 MPa. The uncertainties in the specific volume obtained are estimated to be less than 0.09%. The specific volumes of the pure alcohols and their mixtures with water are found to decrease monotonously with increasing pressure. The numerical P-V relations at each temperature and composition are correlated satisfactorily as a function of pressure by the Tait equation. Definite inflections appear on the isobars of isothermal compressibility or partial molar volume versus composition of alcohol + water mixtures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00503224
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Viscosity of (water + alcohol) mixtures under high pressure (1987)
    Springer
    International journal of thermophysics 8 (1987), S. 147-163 
    Details
    ISSN: 1572-9567
    Keywords: alcohols ; aqueous alcohol solutions ; ethanol ; free-volume theory ; methanol ; 2-methyl-2-propanol ; pressure effect ; propanol ; Tait equation ; t-butyl alcohol ; viscosity ; water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New experimental viscosity data are presented for aqueous solutions of methanol, ethanol, 1-propanol, 2-propanol, and 2-methyl-2-propanol (t-butyl alcohol) in the temperature range from 283 to 348 K and pressures up to 120 MPa. The viscosity measurements were performed using a falling-cylinder viscometer on a relative basis with an uncertainty of less than 2%. The viscosity of pure alcohols and aqueous solutions is found to increase almost linearly with increasing pressure, whereas that of water decreases slightly with pressure at temperatures below 298 K. As for the composition dependence of the viscosity, a distinct maximum appears near 0.3–0.4 mole fraction of alcohol on all isobars at each temperature. The viscosity maximum shifts gradually to a higher alcohol concentration with increasing temperature and pressure. The isobars of aqueous 2-propanol and 2-methyl-2-propanol solutions have another shallow minimum near 0.9 mole fraction of alcohol below 323 K. The experimental results were analized empirically by a Tait-type equation and a free-volume theory. It was found that the isothermal viscosity data were satisfactorily correlated by these equations as functions of pressure and composition or of density and composition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00515199
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Viscosity of twelve hydrocarbon liquids in the temperature range 298–348 K at pressures up to 110 MPa (1982)
    Springer
    International journal of thermophysics 3 (1982), S. 289-305 
    Details
    ISSN: 1572-9567
    Keywords: aromatic hydrocarbons ; cyclohexane ; free volume expression ; hard-sphere theory ; high pressure ; n-alkanes ; torsionally vibrating crystal method ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New experimental data on the viscosity of 12 organic liquids are presented at temperatures of 25, 30, 50, and 75°C and at pressures up to 110 MPa. The liquids measured are five n-alkanes (C6, C7, C8, C10, C12), cyclohexane, and six aromatic hydrocarbons (benzene, toluene, ethylbenzene, o-, m-, p-xylenes). The measurements were performed using a torsionally vibrating crystal method on a relative basis with an uncertainty less than 2%. A linear relationship between fluidity and molar volume, which is predicted from the hard-sphere theory, fails at pressures above 50 MPa. The rough hard-sphere model proposed by Chandler provides a reasonable representation of the data for aromatic hydrocarbons, while for n-alkanes the agreement is not satisfactory because of an aspherical shape of molecules. The viscosity data can be correlated well with the molar volume by a free-volume expression and also can be represented as a function of pressure by a similar expression to the Tait equation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00502346
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