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Compressed-liquid densities of two highly polar + non-polar binary systems



Stephanie L. Outcalt, Arno R. Laesecke


The binary systems ethanol + 2,2,4-trimethylpentane and 2-butanol + 2,2,4-trimethylpentane were studied as models for blends of gasoline with biofuels. Their densities were measured with a vibrating-tube densimeter at compressed-liquid states of three compositions of each of the binary systems. The temperature and pressure ranges of the measured data are from 270 K to 470 K, and 0.5 MPa to 50 MPa. There are no compressed-liquid density data for the binary system ethanol + 2,2,4-trimethylpentane in the literature, thus data reported here are compared to literature data at atmospheric pressure in order to establish their quality. No literature data for the system 2-butanol + 2,2,4-trimethylpentane were found, thus data reported here fill a void and help to further the understanding of molecular interactions in binary systems of a polar and a non-polar compound.
Journal of Molecular Liquids


Blends, Biofuels, 2-Butanol, Compressed-liquid, Equation of State, Ethanol, Density, Iso-octane, 2, 2, 4-trimethylpentane, Vibrating-tube densimeter


Outcalt, S. and Laesecke, A. (2012), Compressed-liquid densities of two highly polar + non-polar binary systems, Journal of Molecular Liquids, [online], (Accessed May 27, 2024)


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Created June 24, 2012, Updated February 19, 2017