Self-diffusion in the compressed, highly viscous liquid 2-ethylhexyl benzoate

Journal Article · Thu Jun 16 04:00:00 EDT 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100323a067· OSTI ID:6180840

Walker, N A; Lamb, D M; Adamy, S T; Jonas, J; Dare-Edwards, M P

The self-diffusion coefficients, densities, and viscosities of liquid 2-ethylhexyl benzoate are reported as a function of pressure from 1 to 4500 bar within the temperature range from -20 to +100/sup 0/C. The rough hard sphere (RHS) model and the Stokes-Einstein equation are used to analyze the data. The RHS model indicates a high degree of rotational-translational coupling which increases as density increases. The nonspherical shape and conformational flexibility of the molecule are proposed as the cause of this behavior. The Stokes-Einstein equation is found to hold over 5 order or magnitude changes in self-diffusion and viscosity.

• Research Organization: Univ. of Illinois, Urbana (USA)
• OSTI ID: 6180840
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:12; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
BENZOIC ACID
CARBOXYLIC ACIDS
DATA
DENSITY
DIFFUSION
EXPERIMENTAL DATA
INFORMATION
MAGNETIC RESONANCE
MONOCARBOXYLIC ACIDS
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
RESONANCE
VISCOSITY