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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Benzyl alcohol with Toluene and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Benzyl alcohol (benzenemethanol); C7H8O; [100-51-6]
NIST Chemistry WebBook
for detail
(3) Toluene (methylbenzene); C7H8; [108-88-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Susarev, M.P.; Gorbunov, A.I., Zh. Prikl. Khim. (Leningrad) 36, 459-61 (1963).
Variables:
Temperature = 293 K - 373 K
Prepared By:
A. Skrzecz
Experimental Remarks:
m
a
- alcohol concentration (mass %) in binary benzyl alcohol-toluene mixture.
m
b
- water concentration (mass %); (a) in organic-rich phase; (b) in water-rich phase.
Experimental Data:
(Notes on the Nomenclature)
Compositions along the saturation curve
t/°C
T/K
Mass Fraction w
1
(compiler)
Mass Fraction w
2
(compiler)
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
20.0
293.2
0.2976
0.6944
0.2564
0.7022
20.0
293.2
0.3936
0.5904
0.3328
0.5859
20.0
293.2
0.4885
0.4885
0.4071
0.4778
20.0
293.2
0.5832
0.5832
0.4830
0.3779
20.0
293.2
0.6720
0.6720
0.5376
0.2704
20.0
293.2
0.7560
0.7560
0.5780
0.1696
20.0
293.2
0.8352
0.8352
0.6069
0.0791
20.0
293.2
0.9080
0.9080
0.6218
0.0000
20.0
293.2
0.0010
0.0010
0.0002
0.0002
20.0
293.2
0.0018
0.0018
0.0003
0.0002
20.0
293.2
0.0028
0.0028
0.0005
0.0002
20.0
293.2
0.0096
0.0096
0.0016
0.0005
20.0
293.2
0.0171
0.0171
0.0029
0.0004
20.0
293.2
0.0420
0.0420
0.0073
0.0000
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)
87.0
360.2
0.208
0.790
0.1813
0.8082
organic-rich phase
87.0
360.2
0.041
0.004
0.0071
0.0008
water-rich phase
87.7
360.9
0.300
0.688
0.2544
0.6846
organic-rich phase
87.7
360.9
0.042
0.004
0.0073
0.0008
water-rich phase
88.0
361.2
0.395
0.580
0.3223
0.5553
organic-rich phase
88.0
361.2
0.047
0.004
0.0082
0.0008
water-rich phase
88.0
361.2
0.487
0.471
0.3770
0.4279
organic-rich phase
88.0
361.2
0.053
0.004
0.0093
0.0008
water-rich phase
88.6
361.8
0.573
0.367
0.4201
0.3158
organic-rich phase
88.6
361.8
0.057
0.004
0.0100
0.0008
water-rich phase
89.7
362.9
0.659
0.267
0.4652
0.2212
organic-rich phase
89.7
362.9
0.067
0.003
0.0119
0.0006
water-rich phase
91.9
365.1
0.718
0.178
0.4629
0.1347
organic-rich phase
91.9
365.1
0.077
0.003
0.0137
0.0006
water-rich phase
95.9
369.1
0.777
0.080
0.4493
0.0543
organic-rich phase
95.9
369.1
0.081
0.002
0.0145
0.0004
water-rich phase
97.6
370.8
0.783
0.036
0.4096
0.0221
organic-rich phase
97.6
370.8
0.083
0.001
0.0149
0.0002
water-rich phase
100.0
373.2
0.787
0.000
0.3810
0.0000
organic-rich phase
100.0
373.2
0.084
0.000
0.0150
0.0000
water-rich phase
Notes:
Method/Apparatus/Procedure:
The titration method was used to measure solubility curve at 20°C. Binary benzyl alcohol-toluene mixtures were titrated with water and water was titrated with binary benzyl alcohol-toluene mixtures. The analytical method was used to determine liquid-liquid-vapor equilibrium (LLVE) data at boiling temperature at 101.32 kPa. Samples of hot liquid organic rich phase taken from the apparatus were cooled to 20°C and titrated with a binary benzyl-alcohol-toluene mixture (the mixture composition was the same as used to prepare the primary sample for LLVE measurements) until homogenization was obtained. The assumption was made that the ratio of benzyl alcohol to toluene in hot liquid phase was the same as at the beginning of experiment in binary mixture. The fraction of water rich phase was always small. The concentration was calculated from mass balance.
Source and Purity of Materials:
(1) Source not specified; purified; b.p.=205.5°C, n(20°C,D)=1.5406, d(20°C,4°C)=1.0459.
(2) Source not specified; purified; b.p.=110.6°C, n(20°C,D)=1.4968, d(20°C,4°C)=0.8670.
(3) Source not specified.
Estimated Errors:
Solubility: Not reported.
Temperature: Not reported.