Volume 29, Issue 1, January 2000
Index of content:
Critical Properties and Vapor Pressure Equation for Alkanes Normal Alkanes With and Isomers for Through29(2000); http://dx.doi.org/10.1063/1.556054View Description Hide Description
A correlation for estimating the vapor pressure of normal alkanes from methane through -hexatriacontane and isomers of butane to nonane is reported. This work extends the correlation for normal alkanes with reported by Ambrose, to both normal alkanes with and their isomers with This vapor pressure equation was based on the Wagner equation and is similar to that used by Ambrose. Literature vapor pressuremeasurements have been reviewed. Tables are given that list the type of apparatus, measurement range and precision, and chemical purity. These criteria were initially used to select measurements for inclusion in the regression analyses to determine the coefficients of the correlation. Vapor pressures estimated from the correlation were compared with all vapor pressuremeasurements reviewed in this work. At pressures greater than 1 kPa, the vapor pressure equation presented here has the following accuracies: for methane, for ethane, propane, and -butane, for -pentane through -octane, 2-methylpropane, and 2-methylbutane, for 2,2-dimethylpropane, -nonane, -decane, and the isomers of hexane through nonane, for -undecane to -hexadecane, for -heptadecane to -eicosane, for -heneicosane to -octacosane, and for -nonacosane to -hexatriacontane. Equations for the critical temperatures and pressures of the normal alkanes as functions of the carbon number are also reported.
Temperature Dependence of Physical–Chemical Properties of Selected Chemicals of Environmental Interest. I. Mononuclear and Polynuclear Aromatic Hydrocarbons29(2000); http://dx.doi.org/10.1063/1.556055View Description Hide Description
Physical–chemical property data, which control air–water partitioning, namely vapor pressure, aqueous solubility and Henry’s law constant over the environmentally relevant temperature range of are compiled and reviewed for the mononuclear aromatic and polynuclear aromatic hydrocarbons. Corresponding enthalpies of phase transition are also reported. As result of a critical review, selected values are given at and where possible equations expressing the temperature dependence are given. Twenty-one aromatic hydrocarbons are studied, with approximately 300 references.