IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Benzene with Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Benzene; C6H6; [71-43-2]  NIST Chemistry WebBook for detail

Original Measurements:
   Thompson, W.H.; Snyder, J.R., J. Chem. Eng. Data 1964, 9, 516-20.

Variables:
   Temperature = 37.0-204.3 °C
   Pressure = 7 and 34.6 Mpa

Prepared By:
   A. Maczynski, Z. Maczynska, and A. Szafranski

Experimental Data:   (Notes on the Nomenclature)

Mutual solubility of benzene and water at 1000 psig (7 Mpa compiler)
t/°C	g₁/100 g solution (compiler)	g₁/100 g soln. Note (compiler)	g₂/100 g solution (compiler)	g₂/100 g soln. Note (compiler)	10⁴ * Mole Fraction x₁	x₁ Note	10⁴ * Mole Fraction x₂	x₂ Note
37.7	0.187	(2)-rich phase	0.0962	(1)-rich phase	4.33	(2)-rich phase	41.6	(1)-rich phase
37.7	0.200	(2)-rich phase	0.0967	(1)-rich phase	4.61	(2)-rich phase	41.8	(1)-rich phase
37.8	0.197	(2)-rich phase	0.1078	(1)-rich phase	4.54	(2)-rich phase	46.6	(1)-rich phase
37.9	0.188	(2)-rich phase	0.1127	(1)-rich phase	4.34	(2)-rich phase	48.7	(1)-rich phase
38.3	0.199	(2)-rich phase	0.0974	(1)-rich phase	4.60	(2)-rich phase	42.1	(1)-rich phase
38.6	-	(2)-rich phase	0.1002	(1)-rich phase	-	(2)-rich phase	43.3	(1)-rich phase
71.2	0.287	(2)-rich phase	0.289	(1)-rich phase	6.63	(2)-rich phase	124	(1)-rich phase
103.3	0.425	(2)-rich phase	-	(1)-rich phase	9.84	(2)-rich phase	-	(1)-rich phase
103.8	0.370	(2)-rich phase	0.645	(1)-rich phase	8.56	(2)-rich phase	274	(1)-rich phase
137.8	-	(2)-rich phase	1.344	(1)-rich phase	-	(2)-rich phase	558	(1)-rich phase
137.9	0.617	(2)-rich phase	-	(1)-rich phase	14.3	(2)-rich phase	-	(1)-rich phase
138.3	0.802	(2)-rich phase	-	(1)-rich phase	18.6	(2)-rich phase	-	(1)-rich phase
170.7	1.780	(2)-rich phase	-	(1)-rich phase	41.6(a)	(2)-rich phase	-	(1)-rich phase
170.7	1.826	(2)-rich phase	-	(1)-rich phase	42.7(a)	(2)-rich phase	-	(1)-rich phase
171.1	1.889	(2)-rich phase	2.498	(1)-rich phase	44.2(a)	(2)-rich phase	1000	(1)-rich phase
171.3	1.986	(2)-rich phase	-	(1)-rich phase	46.5(a)	(2)-rich phase	-	(1)-rich phase
171.7	1.543	(2)-rich phase	-	(1)-rich phase	36.0(a)	(2)-rich phase	-	(1)-rich phase
202.4	3.60	(2)-rich phase	-	(1)-rich phase	85.3	(2)-rich phase	-	(1)-rich phase
202.9	-	(2)-rich phase	4.724	(1)-rich phase	-	(2)-rich phase	1770	(1)-rich phase
203.3	3.96	(2)-rich phase	-	(1)-rich phase	94.2(a)	(2)-rich phase	-	(1)-rich phase
203.9	3.07	(2)-rich phase	-	(1)-rich phase	72.6	(2)-rich phase	-	(1)-rich phase
204.3	3.42	(2)-rich phase	-	(1)-rich phase	81.0	(2)-rich phase	-	(1)-rich phase
37.9	0.243	(2)-rich phase	0.0881	(1)-rich phase	5.61	(2)-rich phase	38.1	(1)-rich phase
70.9	0.387	(2)-rich phase	-	(1)-rich phase	8.95	(2)-rich phase	-	(1)-rich phase
71.3	-	(2)-rich phase	0.256	(1)-rich phase	-	(2)-rich phase	110	(1)-rich phase
71.7	-	(2)-rich phase	0.244	(1)-rich phase	-	(2)-rich phase	105	(1)-rich phase
104.3	0.609	(2)-rich phase	-	(1)-rich phase	14.1	(2)-rich phase	-	(1)-rich phase
104.8	-	(2)-rich phase	0.619	(1)-rich phase	-	(2)-rich phase	263	(1)-rich phase
137.4	0.981	(2)-rich phase	1.211	(1)-rich phase	22.8	(2)-rich phase	505	(1)-rich phase
170.7	1.843	(2)-rich phase	2.387	(1)-rich phase	43.1	(2)-rich phase	959	(1)-rich phase
204.8	4.13	(2)-rich phase	3.998	(1)-rich phase	98.3	(2)-rich phase	1530	(1)-rich phase
237.6	9.93	(2)-rich phase	14.92	(1)-rich phase	248	(2)-rich phase	4320	(1)-rich phase
238.1	10.56	(2)-rich phase	16.42	(1)-rich phase	265	(2)-rich phase	4600	(1)-rich phase


t/°C	g₁/100 g solution	g₁/100 g soln. Note	g₂/100 g solution	g₂/100 g soln. Note	10⁴ * Mole Fraction x₁	x₁ Note	10⁴ * Mole Fraction x₂	x₂ Note
38	0.193	(2)-rich phase	0.0978	(1)-rich phase	4.46	(2)-rich phase	42.3	(1)-rich phase
71	0.288	(2)-rich phase	0.282	(1)-rich phase	6.65	(2)-rich phase	121	(1)-rich phase
104	0.436	(2)-rich phase	0.645	(1)-rich phase	10.1	(2)-rich phase	274	(1)-rich phase
138	0.801	(2)-rich phase	1.34	(1)-rich phase	18.6	(2)-rich phase	558	(1)-rich phase
171	1.54	(2)-rich phase	2.50	(1)-rich phase	36.0	(2)-rich phase	1000	(1)-rich phase
204	3.46	(2)-rich phase	4.75	(1)-rich phase	82.0	(2)-rich phase	1780	(1)-rich phase
38	0.243	(2)-rich phase	0.0880	(1)-rich phase	5.61	(2)-rich phase	38.1	(1)-rich phase
71	0.392	(2)-rich phase	0.246	(1)-rich phase	9.05	(2)-rich phase	106	(1)-rich phase
104	0.608	(2)-rich phase	0.575	(1)-rich phase	14.1	(2)-rich phase	245	(1)-rich phase
138	0.980	(2)-rich phase	1.20	(1)-rich phase	22.8	(2)-rich phase	500	(1)-rich phase
171	1.84	(2)-rich phase	2.24	(1)-rich phase	43.0	(2)-rich phase	905	(1)-rich phase
204	4.11	(2)-rich phase	4.45	(1)-rich phase	98.0	(2)-rich phase	1620	(1)-rich phase
238	10.20	(2)-rich phase	15.90	(1)-rich phase	255	(2)-rich phase	4500	(1)-rich phase

Notes:
   ^(a)  results known to be high due to a high anatytical blank

Method/Apparatus/Procedure:
   About 70 mL each of (1) and (2) were placed in a high-pressure equilibrium cell. The cell was installed in the phase-contacting equipment, pressurized with nitrogen, heated and kept horizontal with no agitation for min.24 hr, then rotated and kept vertical for 3 hr to ensure complete phase separation. Each phase was sampled (20 mL) and the sample volume measured under the experimental conditions. The (1)-rich phase was analyzed for (2) by the Karl Fischer method and the (2)-rich phase for (1) via combustion at 1450--1500 °F over CuO, absorption of CO₂ and back-titration of NaOH.

Source and Purity of Materials:
   (1) Phillips Petroleum Co.; pure grade, 99+ mole%; used as received.
   (2) distilled and redistilled in the absence of carbon dioxide.

Estimated Errors:

   Temperature: not specified.