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  • 1
    Electronic Resource
    Electronic Resource
    Excess molar volumes of 1-nonanol withn-heptane at 25, 35 and 45°C1 (1992)
    Springer
    Journal of solution chemistry 21 (1992), S. 425-431 
    Details
    ISSN: 1572-8927
    Keywords: Excess molar volume ; 1-nonanol ; n-heptane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The excess molar volumes V m E at atmospheric pressure and at 25, 35 and 45°C for binary mixtures of 1-nonanol, with n-heptane have been obtained over the whole mole fraction range from densities measured with a vibrating-tube densimeter. The measurements at 25°C were extended to high dilution of 1-nonanol. The V m E are sigmoid for the three temperatures, with a small maximum at low mole fractions of the alkanol. The absolute values of V m E increase with temperature from 25 to 45°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00649696
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    DISQUAC predictions of phase equilibria, molar and standard partial molar excess quantities for 1-alkanol+cyclohexane mixtures (1994)
    Springer
    Journal of solution chemistry 23 (1994), S. 399-420 
    Details
    ISSN: 1572-8927
    Keywords: DISQUAC ; group contribution ; solutions ; phase equilibria ; excess functions ; 1-alkanols ; cyclohexane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Literature data for phase equilibria: vapor-liquid VLE, liquid-liquid LLE, and solid-liquid SLE; molar excess Gibbs energies G E , molar excess enthalpies H E ; activity coefficients γ i ∞ and partial molar excess enthalpies H i E,o at infinite dilution for 1-alkanol (1)+cyclohexane (2) mixtures are examined by the DISQUAC group contribution model. For a more sensitive test of DISQUAC, the azeotropes, obtained from the reduction of the original isothermal VLE data, are also examined for systems characterized by hydroxyl, alkane and cyclohexane groups. The alkane/cyclohexane and alkane/hydroxyl interaction parameters have been estimated previously. The cyclohexane/hydroxyl interaction parameters are reported in this work. The first dispersive parameters increase regularly with the size of the alkanol; from 1-octadecanol they are constant; an opposite behavior is encountered for the third dispersive parameters, which are constant from 1-dodecanol. The second dispersive parameters decrease as far as 1-propanol and then increase regularly; from 1-octadecanol they are constant. The quasichemical parameters are equal to those for the alkane/hydroxyl interactions. Phase equilibria, the molar excess functions, and activity coefficients at infinite dilution are reasonably well reproduced. Poor results are found for H i E,o and DISQUAC predictions for H i E,o are strongly dependent on temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00973111
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Excess Molar Volumes of Binary Mixtures of 1-Heptanol or 1-Nonanol with n-Polyethers at 25°C (2000)
    Springer
    Journal of solution chemistry 29 (2000), S. 743-756 
    Details
    ISSN: 1572-8927
    Keywords: Excess molar volumes ; l-alkanols ; polyethers ; self-association ; interactions ; interstitial accommodation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Excess molar volumes V E m at 25°C and atmospheric pressure over the entirecomposition range for binary mixtures of 1-heptanol with 2,5-dioxahexane, 2,5,8-trioxanonane,5,8,11-trioxapentadecane, 2,5,8,11-tetraoxadodecane,or 2,5,8,11,14-pentaoxapentadecane, and mixtures of 1-nonanol with 2,5-dioxahexane,3,6-dioxaoctane, 2,5,8-trioxanonane, 3,6,9-trioxaundecane, 5,8,11-trioxapentadecane,2,5,8,11-tetraoxadodecane, or 2,5,8,11,14-pentaoxapentadecane are reportedfrom densities measured with a vibrating-tube densimeter.V E m curves are nearlysymmetrical at about 0.5 mole fraction. Excess molar volumes are usually positive,indicating predominance of positive contributions to V E m from the disruption ofH bonds of alcohols and from physical interactions. When chain lengths ofboth components of the mixture are increased, the contribution from interstitialaccommodation appears to be sufficiently negative, such that V E m becomes negative(e.g., l-nonanol + 5,8,11-tetraoxapentadecane).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005117128122
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Excess molar volumes of diethyl carbonate with hydrocarbons or tetrachloromethane at 25°C (1995)
    Springer
    Journal of solution chemistry 24 (1995), S. 827-835 
    Details
    ISSN: 1572-8927
    Keywords: Excess molar volume ; diethyl carbonate ; n-heptane ; n-decane ; n-tetradecane ; 2,2,4-trimethylpentane ; cyclohexane ; benzene ; toluene ; tetrachloromethane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The excess molar volumes V m E at atmospheric pressure and at 25°C for binary mixtures of diethyl carbonate with n-heptane, n-decane, n-tetradecane, 2,2,4-trimethylpentane, cyclohexane, benzene, toluene, or tetrachloromethane have been obtained over the whole mole-fraction range from densities measured with a vibrating-tube densimeter. The V m E are positive for all the systems investigated, except for the mixture with toluene which is negative. The results for V m E together with data previously published on excess molar enthalpies H m E and excess molar Gibbs energies G m E , suggest interactions between carbonate and hydrocarbons which are stronger with aromatic than with aliphatic hydrocarbons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01131047
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    Paper (German National Licenses)
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