Vapour Pressures Of Benzene Research Articles

Quasi-isochoric pθT measurements, 2nd virial coefficient and vapor pressure of benzene

Quasi-isochoric pθT measurements on benzene vapor were carried out in the low density region using an improved apparatus that was originally proposed by Opel and Schaffenger (1969). The experimental results cover the temperature range between 350 and 600 K and the density range between 13 and 44 mol m 3 . The study includes results that were measured with a similar apparatus by Pietsch (1978) which have been reanalyzed. 2nd virial coefficients are derived with an assumed maximum uncertainty of ± 1.5 per cent. The results are compared with others in the literature and used to develop an improved correlation function for the temperature dependence of B(T). Vapor pressures measured using the same cell are also presented. These are in good agreement with other experimental data as well as with a recently published correlation.

The ebulliometric method of vapour-pressure measurement: vapour pressures of benzene, hexafluorobenzene, and naphthalene

Experimental details of the comparative ebulliometric method for measurement of vapour pressures, together with results of measurements on benzene, hexafluorobenzene, and naphthalene, are given. The results are compared with others in the literature, and the accuracy of the method is discussed.

The vapour pressure of benzene. Part 2.—Saturated vapour pressures from 279 to 300 K

An apparatus for precise, static measurements of vapour pressure in the range 1–100 mmHg is described. Vapour pressures of benzene are reported from 279 to 300 K. These are shown to be continuous and consistent with values extrapolated from reference data.

Enthalpy of vaporization and vapor pressure of benzene, toluene, p-xylene, and tetralin between 1 and 16 bar

Enthalpy of vaporization and vapor pressure of benzene, toluene, p-xylene, and tetralin between 1 and 16 bar

Reference values of vapour pressure the vapour pressures of benzene and hexafluorobenzene

The vapour pressures of benzene and hexafluorobenzene in the range 10 to 100 kPa were measured in the course of developing a comparative ebulliometric apparatus, and the results of four sets of measurements on benzene and of one on hexafluorobenzene are given. There is excellent agreement between the measurements made in this laboratory and those made at the Bartlesville laboratory of the U.S. Department of Energy and equations are given that reproduce the results of the work in the two laboratories within 0.01 per cent of the pressure in a range around atmospheric pressure, corresponding to differences in temperature of not more than 0.005 K.

ChemInform Abstract: THERMODYNAMICS OF SOLUTIONS OF LIQUID CRYSTALS. III. VAPOR PRESSURE OF BENZENE + MBBA (N‐P‐METHOXYBENZYLIDENE‐P‐N‐BUTYLANILINE)

Chemischer InformationsdienstVolume 8, Issue 34 Article ChemInform Abstract: THERMODYNAMICS OF SOLUTIONS OF LIQUID CRYSTALS. III. VAPOR PRESSURE OF BENZENE + MBBA (N-P-METHOXYBENZYLIDENE-P-N-BUTYLANILINE) E. MOLGA, E. MOLGASearch for more papers by this authorJ. STECKI, J. STECKISearch for more papers by this author E. MOLGA, E. MOLGASearch for more papers by this authorJ. STECKI, J. STECKISearch for more papers by this author First published: August 23, 1977 https://doi.org/10.1002/chin.197734079AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume8, Issue34August 23, 1977 RelatedInformation

Vapour–liquid equilibria. Ternary non-electrolyte mixtures with two involatile components–squalane and dinonyl phthalate

The vapour pressures of benzene, cyclohexane, pentane, hexane, and heptane mixed with squalane and/or dinonyl phthalate at 303 K have been measured by a static method and the compositions of the mixtures found by means of a microbalance, enabling the activity coefficient of the volatile component to be calculated. A curve fitting technique allowing for errors in the measurements has been used to test the ability of the Flory–Huggins expression and the Wilson equation to fit the results.

The vapour pressures above the normal boiling point and the critical pressures of some aromatic hydrocarbons

The vapour pressures of benzene, toluene, ethylbenzene, and the three xylenes have been measured between their normal boiling points and their critical temperatures by both dynamic and static methods. Trial was made of several equations proposed for the representation of the vapour pressure–temperature relationship over a wide temperature range, and the constants of best fit for the two most satisfactory equations were found for the six substances. Critical pressures only were determined for propyl-, isopropyl-, 1,2,3-trimethyl-, 1,2,4-trimethyl-, 1,3,5-trimethyl, butyl-, and 1,4-diethyl-benzene and naphthalene. The results were correlated and methods are proposed for the estimation of vapour pressures (including critical pressures) of compounds for which experimental data are lacking.

Industrial Benzene Exposure from Petroleum Naphtha: II. Pertinent Physical Properties of Hydrocarbon Mixtures

Abstract Studies have been made of the vapor pressure of benzene in mixtures with various aliphatic hydrocarbons and a positive deviation from Raoult's Law was shown. Because of this the benzene vapor concentration resulting from the handling of such mixtures will frequently be higher than would be expected from the composition of the solvent. The discussion was extended to include other factors affecting the relative concentrations of benzene vapor and naphtha, and it was concluded that a benzene hazard can be produced by naphthas with a rather low benzene content.

Thermodynamics of the System Benzene-Biphenyl

The vapor pressure of benzene and the heat of dilution of benzene-biphenyl mixtures have been measured at 25°C. The results are shown to be in fair agreement with Guggenheim's formulae based on the lattice model, assuming that the biphenyl molecule occupies twice the volume of the benzene molecule, and that the coordation number of the lattice is between 6 and 12. No agreement can be obtained if the effect of the different sizes is neglected. The experimental results of other authors are critically examined and shown to conform to the above picture.

Influence of Intensive Desiccation on the Vapor Pressure of Benzene

Influence of Intensive Desiccation on the Vapor Pressure of Benzene