THE DENSITIES OF MIXTURES OF BENZENE WITH n-PROPYLBENZENE AND WITH n-BUTYLBENZENE

PETER RICE* Department of Chemical Engineering, Loughborough University. Loughborough, England

A. S. TEJA School of Chemical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, U.S.A.

(Received 20 July 1981; accepted 20 June 1982)

Abstract-The densities of mixtures of benzene with n-propylbenzene at 298.15K and 308.15K and benzene with n-butylbenzene at 298.15K, 308.15K and 323.1SK using a lOm1 pycnometer are reported in this paper.

INTRODUCTION EXPERIMENTAL

The densities of benzene-n-propylbenzene and benzene- The experimental technique for density measurements n-butylbenzene are reported in this paper. The has been reported in[l]. The difference for the present measurements are part of an “on going” project for the study is that a 10 ml pyconometer was used in place of a thermodynamic and transport properties of hydrocarbon 1 ml pyconometer to obtain greater accuracy. A NPL mixtures. calibrated mercury in glass thermometer with O.l”C in-

Table 1. Densities of pure components at 298.15K

Table 2. Densities of benzene propylbenzene mixtures

Table 3. Densities of benzene n-butylbenzene mixtures

x

: E;siork benzsns with XE)

propylbenzene +

@ This work 0 Ref. 3 1

benzene with butylarnzane + c?

0 * 0

0 + a

+x + x 0

00 a

0

A. S. TEJA

crements was used to measure bath temperatures. The temperature in the bath was kept constant to ?O.l”C.

Q The mixtures were made up by weighing. The “pure” components were the commercially purest available from British Drug Houses Co. Ltd., and were used without further purification as the measured densities of the pure components agreed with literature values[2] as shown in Table 1. We estimate that the precision of the com- positions and densities to be to.001 and 0.02% respec- tively.

RFsuLlS Experimental results are given in Tables 2 and 3.

These are compared with the data at 298.15K from[31 in Fig. 1.

REFERENCES

I [I] Teja A. S. and Rice P., Chem. Engng Data 1976 21 17a. 61 ’ ’ ’ ’ ’ ’ ’ ’ ’ 0 0 oz 03 04 0.5 06 07 08 09 IO [21 API Project 44. Thermodynamic Research Centre, Texas A. Mol. fraction benzene M. University, College Station Texas 1969.

[3] Woycicki W. and Sadowska K. W., Bull. Acad. P&m. Sci. Fig. 1. Ser. Sci. Chim. 1977 25 115.