Viscosity of benzene

Figure 38 7. Liquid viscosity of benzene compounds from OX to - 20QX...

Figure 36-12. Pressure of I eel on liquid viscosity of benzene from 130 C to + 160C...

Free volumes and viscosities of benzene and carbon tetrachloride. J. Phys. Chem. 67, 2809 (1963). 

In many cases, the constant C can be neglected and the viscosity data accotmted for by a classical exponential dependence, as long as the temperature is not too close to the boiling point. If C = 0 and T is in °K, B is of the order of 1 to 3x10. For example, the viscosity of benzene decreases by one-half when the temperature increases by 120°C. Figure 5.5 illustrates the temperature dependence of a few typical solvents and Figure 5.6 that of various organic solutes [5]. 

Fig. 21. Change in relative viscosity of benzene—methanol (9 1) solution of polyisoprene during visible light irradiation X without sensitizer o with rose bengal and air A with eosin and air with methylene bide and air v with rodamine 6G and air A with rose bengal without air with eosin, or rhodamin or methylene blue and without air [505].

In addition to offering the full text of the print edition in searchable pdf format, the Internet Version 2009 presents the major tables of numerical data in the form of interactive tables that can be sorted, filtered, and combined in various ways. Substances in these tables can be retrieved by searching on name, formula, or CAS Registry Number, and such a search can be combined with a request for a desired property. Thus one can request a specific property of a specific substance (for example, viscosity of benzene) and receive a customized table with exactly that information. Inverse searches can also be done, in which one asks for all substances that have a set of properties falling within specified ranges. 

THE VOLUME VISCOSITY OF BENZENE-METHANOL MIXTURES IN THE CRITICAL REGION. 

Heiks, J. R. Orban, E. (1956). Liquid viscosities at elevated temperatures and pressures Viscosity of benzene from 90 K to its critical temperature. J. Phys. Chem., 60, 1025-1027. 

The viscosities of benzene and thiophene are obtained from Perry Handbook... 

A peculiar property observed during the preparation of some tributyltin derivatives was the high viscosity of benzene solutions of these compounds. 

The intrinsic viscosity of polystyrene in benzene at 25°C was measuredf for polymers with the following molecular weights ... 

The reactive extrusion of polypropylene-natural rubber blends in the presence of a peroxide (1,3-bis(/-butyl per-oxy benzene) and a coagent (trimethylol propane triacrylate) was reported by Yoon et al. [64]. The effect of the concentration of the peroxide and the coagent was evaiuated in terms of thermal, morphological, melt, and mechanical properties. The low shear viscosity of the blends increased with the increase in peroxide content initially, and beyond 0.02 phr the viscosity decreased with peroxide content (Fig. 9). The melt viscosity increased with coagent concentration at a fixed peroxide content. The morphology of the samples indicated a decrease in domain size of the dispersed NR phase with a lower content of the peroxide, while at a higher content the domain size increases. The reduction in domain size... 

Fig. 143.—The intrinsic viscosity of a polyisobutylene fraction of high molecular weight plotted against temperature in four solvents cyclohexane, diisobutylene (DIB), toluene and benzene. The lines shown have been calculated according to theory. (Fox and Flory. )...

Fig. 144.—The treatment of expansion factor-temperature data obtained from intrinsic viscosities of polyisobutylene fractions in three pure solvents and in ethyl-benzene-diphenyl ether mixtures. Data for fractions having molecular weights Xl6 of 1.88, 1.46, and 0.180 are represented by O,, and Q, respectively. (Fox and Flory. 2)...

The data in Table I are not directly comparable, since the viscosity of the 3-isomer was determined in benzene while the others were measured in DMSO. In addition, the first two polymers were prepared in bulk polymerizations, while the polymerization of methyl 3-vinylsalicylate was carried out with the monomer diluted 1 1 with benzene. Thus no certain conclusion can be drawn the data are, however, an indication of possible difficulty in radical polymerization of substituted styrenes bearing a phenol ortho to the vinyl group. 

Initiator decomposition studies of AIBN in supercritical C02 carried out by DeSimone et al. showed that there is kinetic deviation from the traditionally studied solvent systems.16 These studies indicated a measurable decrease in the thermal decomposition of AIBN in supercritical C02 over decomposition rates measured in benzene. Kirkwood correlation plots indicate that the slower rates in supercritical C02 emanate from the overall lower dielectric constant (e) of C02 relative to that ofbenzene. Similar studies have shown an analogous trend in the decomposition kinetics ofperfluoroalkyl acyl peroxides in liquid and supercritical C02.17 Rate decreases of as much as 30% have been seen compared to decomposition measured in 1,1,2-trichlorotrifluoroethane. These studies also served to show that while initiator decomposition is in general slower in supercritical C02, overall initiation is more efficient. Uv-visual studies incorporating radical scavengers concluded that primary geminate radicals formed during thermal decomposition in supercritical C02 are not hindered to the same extent by cage effects as are those in traditional solvents such as benzene. This effect noted in AIBN decomposition in C02 is ascribed to the substantially lower viscosity of supercritical C02 compared to that ofbenzene.18... 

The mixture becomes viscous however, ja. good magnetic stirrer is adequate. The checkers found it convenient to decrease the viscosity of the mixture by increasing the volume of benzene from 100 ml. to 150-300 ml. 

Viswanathan, S., Rao, M.A., and Prasad, D.H.L. Densities and viscosities of binary liquid mixtures or anisole or methyl tert-butyl ether with benzene, chlorobenzene, benzonitrile, and nitrobenzene, / Chem. Eng. Data, 45 (5) 764-770, 2000. 

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