IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ethene with Benzene, 1, 3-dimethyl-, (m-xylene) and Ethylbenzene

Components:
   (1) Ethene; C2H4; [74-85-1]  NIST Chemistry WebBook for detail
   (2) Ethylbenzene; C8H10; [100-41-4]  NIST Chemistry WebBook for detail
   (3) Benzene, 1, 3-dimethyl-, (m-xylene); C8H10; [108-38-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Nakamura, E.; Koguchi, K.; Amemiya, T., Kogyo Kagaku Zasshi, 1966, 69, 42-47.

Variables:
   Temperature = 213.15 K
   Pressure = 192.5 to 486.4 kPa (1.9 to 4.8 atm)

Prepared By:
   W. Hayduk

Experimental Remarks:

   The purpose of these low temperature measurements was to determine the hypothetical solubility in xylene below the xylene freezing point.

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)


t/°C	T/K	Temp Note	Pressure [kPa]	Pressure Note	Mole Fraction (x₁)	x₁ Note	Mole Fraction (x₃)	x₃ Note	Remark(s)
−60	213.15	1	192.5	1	0.163	Ethene	0.2977	3 Ethylbenzene	2 m:0.5630 moles solvent; 0.1561 moles ethene
−60	213.15	1	192.5	1	0.163	Ethene	0.2977	3 Ethylbenzene	2 e:0.2387 moles solvent; 0.1561 moles ethene
−60	213.15	1	395.2	1	0.333	Ethene	0.2978	3 Ethylbenzene	2 m:0.5677 moles solvent; 0.4032 moles ethene
−60	213.15	1	395.2	1	0.333	Ethene	0.2978	3 Ethylbenzene	2 e:0.2408 moles solvent; 0.4032 moles ethene
−60	213.15	1	486.4	1	0.435	Ethene	0.2978	3 Ethylbenzene	2 m:0.5677 moles solvent; 0.6210 moles ethene
−60	213.15	1	486.4	1	0.435	Ethene	0.2978	3 Ethylbenzene	2 e:0.2408 moles solvent; 0.6210 moles ethene

Notes:
   ¹  Calculated by compiler.
   ²  The symbol m, and e, refer to actual number of moles of m-xylene, and ethylbenzene, in gas-free solvent solution, respectively.
   ³  The ethene-free solvent composition (x'₃) was calculated by the compiler.

Method/Apparatus/Procedure:
   For lower pressures a 200 cm³ graduated glass cell was used. Solvent was charged to 100 cm³; then the cell and contents were weighed. For degassing, ethene was pressured into the cell from a 170 cm³ ss bomb; then the cell was shaken, gas evacuated and cell recharged with ethene several times. After degassing, the cell contents were equilibrated at constant temperature and pressure for 3-4 h. After the volume of solution was measured, the sealed cell was placed in a desiccator and later weighed at room temperature. For higher pressures two cells, one glass the other ss, of identical volume were used simultaneously. The same procedure was used except that the solution volume was measured in the glass cell and the final mass in the ss cell. The glass tended to fail at high pressures.

Source and Purity of Materials:
   1. Ethene purity was 99.6%.
   2. The 1,3-Dimethylbenzene purity was 99.9%.
   3. Ethylbenzene purity not given.

Estimated Errors:
   Solubility: δx₁/x₁ = ± 0.02 (compiler)
   Temperature: δT/K = ± 0.1
   Pressure: δP/P = ± 0.01