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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
1-Proponal with Decane and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) 1-Proponal (n-propanol, propyl alcohol, n-propyl alcohol); C3H8O; [71-23-8]
NIST Chemistry WebBook
for detail
(3) Decane (n-decane); C10H22; [124-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Dubovskaya, A.S.; Karapetyants, M.Kh., Tr. Inst.-Mosk., Khim.-Tekhnol. Inst. Im. D. I. Mendeleeva 58, 92 (1968).
Variables:
Temperature = 293 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)
20.0
293.2
0.0730
0.9234
0.1537
0.8210
20.0
293.2
0.1443
0.8494
0.2753
0.6486
20.0
293.2
0.2136
0.7740
0.3671
0.5618
20.0
293.2
0.2801
0.6990
0.4342
0.4577
20.0
293.2
0.3450
0.6240
0.4846
0.3702
20.0
293.2
0.4075
0.5554
0.5321
0.3063
20.0
293.2
0.4675
0.4859
0.5645
0.2478
20.0
293.2
0.5250
0.4178
0.5884
0.1978
20.0
293.2
0.5780
0.3495
0.5974
0.1526
20.0
293.2
0.6270
0.2847
0.6018
0.1154
20.0
293.2
0.6655
0.2207
0.5846
0.0819
20.0
293.2
0.6770
0.1660
0.5327
0.0552
20.0
293.2
0.6730
0.0975
0.4548
0.0278
20.0
293.2
0.6286
0.0634
0.3735
0.0159
20.0
293.2
0.5570
0.0360
0.2886
0.0079
20.0
293.2
0.3927
0.0123
0.1648
0.0022
20.0
293.2
0.3444
0.0052
0.1369
0.0009
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
293.2
0.1270
0.8660
0.2461
0.7087
hydrocarbon-rich phase
20.0
293.2
0.1420
0.8520
0.2721
0.6895
hydrocarbon-rich phase
20.0
293.2
0.2060
0.7820
0.3574
0.5731
hydrocarbon-rich phase
20.0
293.2
0.4800
0.4740
0.5758
0.2403
hydrocarbon-rich phase
20.0
293.2
0.4480
0.0160
0.1998
0.0030
water-rich phase
20.0
293.2
0.5960
0.0480
0.3304
0.0112
water-rich phase
20.0
293.2
0.6810
0.1360
0.5049
0.0426
water-rich phase
20.0
293.2
0.4800
0.4740 (a)
0.5758
0.2403
water-rich phase
Notes:
a
Critical point extrapolated by the authors, by Alekseev's method, Ref. 1.
Method/Apparatus/Procedure:
The titration method was used to determine the solubility curve. Binary hydrocarbon-alcohol mixtures were titrated with water until turbidity was observed, as described in Ref. 1. The relationship of density versus composition of saturated mixture was used later to calculate equilibrium. The method was tested on the ethanol-heptane-water system and the results were in agreement with literature data. The analytical method was used to determine liquid- liquid equilibria. A binary mixture of known composition was placed in a special thermostated vessel and the third component was added to obtain a two-phase mixture. This mixture was agitated for 3-4 h to ensure equilibrium. The mixture was allowed to stand 1-2 h to become clear and then both phases were taken for density measurements. On the basis the previously constructed relationship of density versus composition of the saturated mixture, the composition of the mixture in equilibrium was calculated.
Source and Purity of Materials:
(1) Source not specified; d(20°C,20°C)=0.805, n(20°C,D)=1.3858.
(2) Source not specified; d(20°C,20°C)=0.730, n(20°C,D)=1.4119.
(3) Double distilled.
Estimated Errors:
Solubility: Not reported.
Temperature: Temp. ± 0.1K; conc. ± 0.0001.
References:
1
W. D. Bancroft, Phys. Rev. 3, 21 (1896).