Azeotropes of 2-Ethoxyethanol with Alkyl Benzenes

April 1951

INDUSTRIAL AND ENGINEERING CHEMISTRY LITERATURE CITED

(1) ".km.ml Tables of Physical Constants, 1941," P. 8 , Princeton, Sational Research Council, 1941.

( 2 ) Beatty, H. A . , and C a l i n w r t , G., I m EM. C H E ~ 26, ~ . , 904 (1934). ( 3 ) Brunel, R. F., et al., J . Am. Chem. Soc.. 43,561 (1921).

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(7) Jones, C . A , Schoenborn, E. AI., and Colburn, Ai. I'., ISD. Esa. CHEM.,35,666 (1943). ( 8 ) hlertes, T, S.,and Colburn, A. p,, Ibid,, 39, 787 (1947). (9) Redlich, O., and Kister, A. T., I t i d . , 40,341, 345 (1948). Shell Development c0.,";lIethyl Ethyl Ketone-Its ~ +

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and Uses," San Francisco, Shell Chemical Corp., 1'338.

(4)Carlson, H. C., and Colburn, A. P..IND.ENG. C H E M . , 34. 581 (1942).

( 5 ) Clark, A. RI.. Trans. Faraday Soc., 41,718 (1945). (6) Felsing, IT,A , . et al., J . d m . Chem. Soc., 56, 2262 (1934'.

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RECEIVED April 14, 19.50. Contribution 7 from the Chemical Engineering I.aboi.atories, Engineering Center. Columbia. University, Xew Y o r k , Iu. Y .

Azeotropes of 2-Ethoxyethanol with Alkyl Benzenes J

WILLIAII F. KIEFFER AND CHARLES E. GRABIELl The College of Wooster, Wooster, Ohio Inconsistencies in the available data on azeotropes of 2ethoxyethanol (Cellosolve) with alkyl benzenes are re\ ealed particularly by applying the correlation procedure of Skolnilc. A reinvestigation of the vapor-liquid equilibrium compositions and the characteristics of the nzeotropes formed in seven binary liquid systems is reported. 3linimum boiling azeotropes exist between 2-ethoxyethanol and seven alkyl benzenes boiling in the range from 109.4' C. (toluene) to 163.4' C. (mesitylene) at a pressure of 733 m m . of mercury. Data on boiling temperature. composition, and refractive index of these azeotropes are listed. Data are tabulated also for the refractive indexes of solutions of 2-ethoxyethanol in these all- controlled period of heating to produce a fully softened plantation sheet rubber of the best quality. I thank Glen E. Neyer of Latex and Rubber, Inc., anti H. A. Saunders of Socfin Co., Lt,d.,for calling attention to this error. HARRY L. F I S H E R