SearchPublisher and Institutes
You are here: Home :: Area NEM :: Chemistry :: Physical chemistry
A. A. Ruth, H. Lesche, B. Nickel
Temperature Dependence of Viscosity and Density of cis-1,4/trans-1,3-Dimethylcyclohexane and Several other Commonly Used Organic Solvents
The dynamic viscosity (η) of the glass-forming 50:50 mixture of cis-1,4/trans-1,3-dimethylcyclohexane (ct-DMCH) was measured from 293K down to ≈126K where η~1.2×106mPas. The viscosity measurements of several other commonly used solvents cover the range from 293K down to ≈148K (η~1.4×104mPas) for 1-propanol (1-Prop), to ≈118K (η~2.5×102mPas) for 2-methylpentane (2-MP), to ≈167K (η~10.0mPas) for isooctane (Isooct), to ≈183K (η~2.8mPas) for cyclopentane (CP) and down to ≈98K (η~4.6×102mPas) for the 30:70 mixture of cyclopentane/isopentane (CP/IP). The density (ρ) of all solvents was measured correspondingly over appropriate temperature ranges.
For the solvents studied here, the temperature dependence of the viscosity can be represented by a single Arrhenius term down to ~180K. Over a wider temperature range down to ~118K the sum of two Arrhenius terms is required, and in the low temperature regime a Vogel–Tammann–Fulcher expression is necessary to adequately describe the temperature dependence of the dynamic viscosity.
Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag
Print ISSN: 0942-9352
Volume: 217, 06/2003
Pages: 707