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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Methanol with Octane (n-octane) and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Methanol (methyl alcohol); CH4O; [67-56-1]
NIST Chemistry WebBook
for detail
(3) Octane (n-octane); C8H18; [111-65-9]
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)
10.0
283.15
0.022
0.978
0.0742
0.9258
hydrocarbon-rich phase
10.0
283.15
0.014
0.986
0.0482
0.9518
hydrocarbon-rich phase
10.0
283.15
0.007
0.993
0.0245
0.9755
hydrocarbon-rich phase
10.0
283.15
0.007
0.993
0.0245
0.9755
hydrocarbon-rich phase
10.0
283.15
0.844
0.156
0.9507
0.0493
hydrocarbon-poor phase
10.0
283.15
0.889
0.0736
0.9107
0.0211
hydrocarbon-poor phase
10.0
283.15
0.866
0.024
0.8106
0.0063
hydrocarbon-poor phase
10.0
283.15
0.795
0.000
0.6856
0.0000
hydrocarbon-poor phase
20.0
293.15
0.050
0.950
0.1580
0.8420
hydrocarbon-rich phase
20.0
293.15
0.028
0.972
0.0931
0.9069
hydrocarbon-rich phase
20.0
293.15
0.0069
0.9931
0.0242
0.9758
hydrocarbon-rich phase
20.0
293.15
0.004
0.996
0.0141
0.9859
hydrocarbon-rich phase
20.0
293.15
0.004
0.996
0.0141
0.9859
hydrocarbon-rich phase
20.0
293.15
0.006
0.994
0.0211
0.9789
hydrocarbon-rich phase
20.0
293.15
0.005
0.995
0.0176
0.9824
hydrocarbon-rich phase
20.0
293.15
0.005
0.995
0.0176
0.9824
hydrocarbon-rich phase
20.0
293.15
0.823
0.177
0.9431
0.0569
hydrocarbon-poor phase
20.0
293.15
0.878
0.0937
0.9197
0.0275
hydrocarbon-poor phase
20.0
293.15
0.8840
0.0418
0.8602
0.0114
hydrocarbon-poor phase
20.0
293.15
0.861
0.030
0.8098
0.0079
hydrocarbon-poor phase
20.0
293.15
0.851
0.008
0.7708
0.0020
hydrocarbon-poor phase
20.0
293.15
0.825
0.011
0.7368
0.0028
hydrocarbon-poor phase
20.0
293.15
0.795
0.011
0.6955
0.0027
hydrocarbon-poor phase
20.0
293.15
0.773
0.009
0.6645
0.0022
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 the hydrocarbon-rich phase was smaller then 0.01-0.02%.
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.=125.4°C, n(20°C)=1.3976.
(3) Source not specified.
Estimated Errors:
Solubility: Not reported.
Temperature: Temp. ±0.5°C; soly. < ±1% (relative error of methanol concentration).