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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Ethanol with m-Xylene (1,3-dimethylbenzene, 1,3-xylene) and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Ethanol (ethyl alcohol); C2H6O; [64-17-5]
NIST Chemistry WebBook
for detail
(3) m-Xylene (1,3-dimethylbenzene, 1,3-xylene); C8H10; [108-38-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Nam, S.; Hayakawa, T.; Fujita, S., J. Chem. Eng. Jpn. 5, 327 (1972).
Variables:
Temperature = 298 K
Prepared By:
A. Skrzecz
Experimental Data:
(Notes on the Nomenclature)
Compositions along the saturation curve
t/°C
T/K
Mass Fraction w
1
Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
25.00
298.15
0.0829
0.9109
0.1678
0.8001
25.00
298.15
0.1517
0.8331
0.2748
0.6548
25.00
298.15
0.2094
0.7661
0.3464
0.5499
25.00
298.15
0.2988
0.6565
0.4281
0.4081
25.00
298.15
0.3651
0.5731
0.4730
0.3222
25.00
298.15
0.4371
0.4803
0.5102
0.2433
25.00
298.15
0.5040
0.3877
0.5310
0.1772
25.00
298.15
0.5567
0.3059
0.5349
0.1275
25.00
298.15
0.6061
0.1998
0.5097
0.0729
25.00
298.15
0.6150
0.1351
0.4685
0.0447
25.00
298.15
0.6100
0.0993
0.4368
0.0309
25.00
298.15
0.5809
0.0613
0.3816
0.0175
25.00
298.15
0.5388
0.0364
0.3284
0.0096
25.00
298.15
0.4907
0.0210
0.2806
0.0052
25.00
298.15
0.4437
0.0117
0.2410
0.0028
25.00
298.15
0.3861
0.0065
0.1988
0.0015
Compositions of coexisting phases
t/°C
T/K
Mass Fraction w
1
Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
Comment(s)
25.00
298.15
0.022
0.977
0.049
0.945
hydrocarbon-rich phase
25.00
298.15
0.030
0.968
0.066
0.923
hydrocarbon-rich phase
25.00
298.15
0.035
0.962
0.076
0.907
hydrocarbon-rich phase
25.00
298.15
0.037
0.960
0.080
0.903
hydrocarbon-rich phase
25.00
298.15
0.042
0.954
0.090
0.888
hydrocarbon-rich phase
25.00
298.15
0.054
0.942
0.114
0.864
hydrocarbon-rich phase
25.00
298.15
0.056
0.940
0.118
0.860
hydrocarbon-rich phase
25.00
298.15
0.065
0.929
0.134
0.834
hydrocarbon-rich phase
25.00
298.15
0.071
0.922
0.145
0.818
hydrocarbon-rich phase
25.00
298.15
0.081
0.912
0.164
0.800
water-rich phase
25.00
298.15
0.311
0.004
0.1506
0.0008
water-rich phase
25.00
298.15
0.371
0.007
0.1888
0.0015
water-rich phase
25.00
298.15
0.426
0.009
0.2272
0.0021
water-rich phase
25.00
298.15
0.446
0.013
0.2430
0.0031
water-rich phase
25.00
298.15
0.474
0.018
0.2662
0.0044
water-rich phase
25.00
298.15
0.519
0.027
0.3068
0.0069
water-rich phase
25.00
298.15
0.534
0.032
0.3221
0.0084
water-rich phase
25.00
298.15
0.563
0.047
0.3562
0.0129
water-rich phase
25.00
298.15
0.580
0.058
0.3789
0.0164
water-rich phase
25.00
298.15
0.599
0.080
0.4118
0.0239
water-rich phase
Method/Apparatus/Procedure:
The titration method was used to determine solubility curve. A binary ethanol-xylene mixture of known composition was prepared in a conical flask with silicone stopper to prevent evaporation. The mixture was placed in a thermostated vessel, agitated by a magnetic stirrer and titrated through a needle of the syringe with water until two phases were observed. The result was checked by another ternary mixture, of the same composition as above: (a) titrated with one of the pure components until the turbidity disappeared, (b) by reappearance of turbidity by lowering the temperature about 0.5°C. The two-phase mixture was placed in a 50 mL glass-stoppered test tube at temperature of 25°C, shaken vigorously, kept for nearly 2 h in a constant temperature water bath, and after separation each layer was pipetted for sampling. Refractive index and density of each phase were measured and composition was found from the calibration curves constructed during solubility measurements. When mixtures were not separated clearly after several hours, a centrifuge was used to obtain separation.
Source and Purity of Materials:
(1) Wako Pure Chemical Inst. Ltd., guaranteed reagent; p(25°C)=785.32 kg m
-3
, n(25°C,D)=1.3600; used as received.
(2) Kishida Chem. Ltd., guaranteed reagent; p(25°C)=859.88 kg m
-3
, n(25°C,D)=1.4940; used as received.
(3) Ion exchanged, distilled.
Estimated Errors:
Solubility: Not reported.
Temperature: Temp. ±0.02°C and ±0.1°C (near plait point).