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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Methanol with Heptane and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Heptane (n-heptane); C7H16; [142-82-5]
NIST Chemistry WebBook
for detail
(3) Methanol (methyl alcohol); CH4O; [67-56-1]
NIST Chemistry WebBook
for detail
Original Measurements:
Kogan, V.B.; Deizenrot, I.V.; Kulbyaeva, T.A.; Fridman, V.M., Zh. Prikl. Khim (Leningrad) 29, 1387 (1956).
Variables:
Temperature = 283 K - 293 K
Prepared By:
A. Skrzecz
Experimental Data:
(Notes on the Nomenclature)
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)
20.0
293.15
0.066
0.934
0.1810
0.8190
hydrocarbon-rich phase
10.0
283.15
0.038
0.962
0.1099
0.8901
hydrocarbon-rich phase
10.0
283.2
0.008
0.992
0.0246
0.9754
hydrocarbon-rich phase
20.0
293.15
0.020
0.980
0.0600
0.9400
hydrocarbon-rich phase
20.0
293.15
0.011
0.989
0.0336
0.9664
hydrocarbon-rich phase
10.0
283.2
0.004
0.996
0.0124
0.9876
hydrocarbon-rich phase
10.0
283.2
0.003
0.997
0.0093
0.9907
hydrocarbon-rich phase
20.0
293.15
0.0021
0.9979
0.0065
0.9935
hydrocarbon-rich phase
20.0
293.15
0.777
0.233
0.9159
0.0841
hydrocarbon-poor phase
10.0
283.2
0.790
0.210
0.9217
0.0783
hydrocarbon-poor phase
20.0
293.15
0.860
0.0973
0.8893
0.0322
hydrocarbon-poor phase
10.0
283.2
0.867
0.0565
0.8491
0.0177
hydrocarbon-poor phase
10.0
283.2
0.844
0.018
0.7706
0.0053
hydrocarbon-poor phase
20.0
293.15
0.860
0.032
0.8095
0.0096
hydrocarbon-poor phase
10.0
283.2
0.799
0.009
0.6988
0.0025
hydrocarbon-poor phase
20.0
293.15
0.781
0.000
0.6672
0.0000
hydrocarbon-poor phase
Method/Apparatus/Procedure:
The analytical method was used. The two phase mixture was periodically shaken in a thermostated burette with water jacket for several hours. The phases were removed for analysis after separation. Methanol was determined by the Karl Fischer method. Water concentration in hydrocarbon-rich phase was smaller then 0.001-0.02%.
Source and Purity of Materials:
(1) Source not specified, pure grade; distilled; contained <0.01% of water n(20°C)=1.3391.
(2) Source not specified; used as received; b.p.=98.4°C, n(20°C)=1.3877.
(3) Source not specified.
Estimated Errors:
Solubility: Not reported.
Temperature: Temp. ±0.05°C; soly. < ±1% (relative error of methanol concentration).