Viscosities and Densities of Methanol-Toluene Solutions up to their Normal Boiling Points

Hammond, L. W.; Howard, Katherine S.; McAllister, R. A.

doi:10.1021/j150563a035

Cited by 38 publications

(13 citation statements)

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“…and one at 37.8"C., all the calculated viscosity values agree with the experimental data with a maximum difference of * 0.5%. The average difference, again excepting the three points at 25"C., is about 2 0.2%, which is the same magnitude as the reported accuracy of the data (7). It may therefore be concluded that for the methanol-toluene system Equation (20) correlates the data with a high degree of precision.…”

Section: Methanol-toluene Systemsupporting

confidence: 65%

The viscosity of liquid mixtures

McAllister¹

1960

AIChE Journal

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678

484

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The theory of viscosity of liquid mixtures presented here is based on Eyring's theory of absolute reaction rates. The most important conclusions drawn are that for liquids the free energies of activation for viscosity are additive on a number fraction or mole fraction basis and that interactions of like and unlike molecules must be considered. Methanol-toluene, benzenetoluene, and cyclohexane-heptane systems were analyzed with a three-body model and found to fit within the accuracy of the experimental data. Acetone-water mixtures fit a four-body interaction much better. Indications are that to describe acetone-water mixtures well would require consideration of seven-or eight-body interactions.

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Section: Methanol-toluene Systemsupporting

confidence: 65%

The viscosity of liquid mixtures

McAllister¹

1960

AIChE Journal

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678

484

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“…Rather, the fluid flow in the capillary viscometer may have been affected at these pressures and temperatures by compressibility effects, which were not considered in the data analysis because an understanding was developed only later by van den Berg et al 131 The results of Blokker 12 also scatter considerably bracketing the deviations of the results of Golubev and Petrov. 47 The atmospheric pressure data of Mitsukuri and Tonomura, 92 Hammond et al, 56 Lee et al, 81 and Soliman and Marschall, 118 show deviations within 2%.…”

Section: Resultsmentioning

confidence: 95%

A New Reference Correlation for the Viscosity of Methanol

Xiang¹,

Laesecke²,

Huber³

2006

Journal of Physical and Chemical Reference Data

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A new reference-quality correlation for the viscosity of methanol is presented that is valid over the entire fluid region, including vapor, liquid, and metastable phases. To describe the zero-density viscosity with kinetic theory for polar gases, a new expression for the collision integral of the Stockmayer potential is introduced. The initial density dependence is based on the Rainwater-Friend theory. A new correlation for the third viscosity virial coefficient is developed from experimental data and applied to methanol. The high-density contribution to the viscosity is based on the Chapman-Enskog theory and includes a new expression for the hard-sphere diameter that is a function of both temperature and density. The resulting correlation is applicable for temperatures from the triple point to 630 K at pressures up to 8 GPa. The estimated uncertainty of the resulting correlation ͑with a coverage factor of 2͒ varies from 0.6% in the dilute-gas phase between room temperature and 630 K, to less than 2% for the liquid phase at pressures up to 30 MPa at temperatures between 273 and 343 K, 3% for pressures from 30 to 100 MPa, 5% for the liquid from 100 to 500 MPa, and 10% between 500 MPa and 4 GPa. At very high pressures, from 4 to 8 GPa, the correlation has an estimated uncertainty of 30% and can be used to indicate qualitative behavior. © 2006 by the U.S. Secretary of Commerce on behalf of the United States. All rights reserved.

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“…The data of Lima, 23 Mamedov and Panchenkov, 24 and Hammond et al 25 were obtained with capillary viscometers. Neduzhii and Khmara 26 used a capillary transpiration viscometer, without mentioning temperature accuracy or resolution.…”

Section: Secondary Datamentioning

confidence: 99%

Standard Reference Data for the Viscosity of Toluene

Santos¹,

Castro²,

Dymond³

et al. 2005

Journal of Physical and Chemical Reference Data

141

100

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Viscosity is an important transport property for the optimum design of a chemical process plant and for the development of molecular theories of the liquid state. A large amount of experimental viscosity data has been produced for all types of liquids, from alternative refrigerants to molten salts and molten metals. The accuracy of these data is related to the operating conditions of the instrument and, for this purpose as well as for the calibration of relative instruments, standard reference data for viscosity are necessary over a wide range of temperatures. New experimental data on the viscosity of liquid toluene along the saturation line have been obtained recently, mostly at low temperatures. The quality of the data is such that recommended values can be proposed with uncertainties of 0.5% ͑95% confidence level͒ for 260 KрTр370 K and 2% for 210 KрT Ͻ260 K and 370 KϽTр400 K. A discussion about the uncertainties in the measurements and about the purity of the samples is made. The proposed value for the viscosity of liquid toluene at 298.15 K and 0.1 MPa is ϭ554.2Ϯ3.3 Pa s.

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Viscosities and Densities of Methanol-Toluene Solutions up to their Normal Boiling Points

Cited by 38 publications

References 0 publications

The viscosity of liquid mixtures

The viscosity of liquid mixtures

A New Reference Correlation for the Viscosity of Methanol

Standard Reference Data for the Viscosity of Toluene

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