Abstract
We report the critical behavior of osmotic compressibility (% T ), that was deduced from turbidity, in an ionic fluid mixture comprised of tetra-n-butyl ammonium picrate in a low dielectric solvent, 1-dodecanol. The liquid-liquid phase separation in this system is driven, predominantly, by Coulombic interactions. Measurements covered the reduced temperature, t, range 7 x 105 ⩽ / ⩽ 7 × 10− 2. The critical behavior of Z, indicates acrossover from the mean-field to the Ising critical exponent, as the critical temperature (T c) is approached.
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Narayanan, T., Pitzer, K.S. Turbidity of a near-critical ionic fluid. Int J Thermophys 15, 1037–1043 (1994). https://doi.org/10.1007/BF01458813
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DOI: https://doi.org/10.1007/BF01458813