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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitroethane with 1-Propanol and Water
Components:
(1) 1-Propanol; C3H8O; [71-23-8]
NIST Chemistry WebBook
for detail
(2) Nitroethane; C2H5NO2; [79-24-3]
NIST Chemistry WebBook
for detail
(3) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Malone, J.W.; Vining, R.W., J. Chem. Eng. Data 12, 387-9 (1967).
Variables:
Temperature = 298 K
Prepared By:
V. P. Sazonov and N. I. Lisov
Experimental Data:
(Notes on the Nomenclature)
Table 1. Mutual solubility of nitroethane (1), 1-propanol (2) and water (3)
t/°C
T/K
10
2
* Mass Fraction w
1
10
2
* Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
25
298
5.05
0.00
0.0126
0.0000
25
298
4.83
3.92
0.0124
0.0126
25
298
4.80
7.68
0.0127
0.0253
25
298
5.23
11.70
0.0143
0.0399
25
298
5.58
15.63
0.0158
0.0553
25
298
7.48
19.46
0.0223
0.0723
25
298
9.98
22.93
0.0314
0.0900
25
298
12.50
25.84
0.0414
0.1070
25
298
15.60
29.39
0.0554
0.1304
25
298
18.65
31.96
0.0706
0.1510
25
298
22.20
34.58
0.0904
0.1760
25
298
25.91
36.47
0.1135
0.1996
25
298
32.60
37.50
0.1598
0.2296
25
298
39.49
36.83
0.2145
0.2498
25
298
46.35
35.06
0.2766
0.2613
25
298
51.92
32.66
0.3308
0.2599
25
298
58.10
29.70
0.3979
0.2541
25
298
63.43
26.61
0.4591
0.2406
25
298
69.31
22.94
0.5321
0.2200
25
298
74.77
19.25
0.6043
0.1943
25
298
80.23
15.45
0.6827
0.1642
25
298
85.37
11.55
0.7580
0.1281
25
298
90.40
7.70
0.8376
0.0891
25
298
94.98
3.78
0.9057
0.0450
25
298
99.14
0.00
0.9651
0.0000
Table 2. Composition of equilibrium liquid phases
t/°C
T/K
10
2
* Mass Fraction w
1
10
2
* Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
Comment(s)
25
298
93.50
4.90
0.8797
0.0576
nitroethane-rich phase
25
298
85.80
11.30
0.7661
0.1260
nitroethane-rich phase
25
298
74.60
19.40
0.6024
0.1957
nitroethane-rich phase
25
298
59.70
28.60
0.4141
0.2478
nitroethane-rich phase
25
298
41.60
36.30
0.2324
0.2533
nitroethane-rich phase
25
298
31.70
37.60
0.1535
0.2274
nitroethane-rich phase
Table 3. Composition of equilibrium liquid phases
t/°C
T/K
10
2
* Mass Fraction w
1
10
2
* Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
Comment(s)
25
298
4.80
5.00
0.0124
0.0161
water-rich phase
25
298
5.00
9.80
0.0134
0.0329
water-rich phase
25
298
5.20
12.40
0.0143
0.0426
water-rich phase
25
298
5.60
14.70
0.0157
0.0516
water-rich phase
25
298
6.90
18.10
0.0202
0.0661
water-rich phase
25
298
9.40
22.10
0.0292
0.0856
water-rich phase
Method/Apparatus/Procedure:
Two methods were used. The solubility curve was determined by the titration method. A measured amount of (1) was added to a tarred 50-mL Erlenmeyer flack and titrated to the cloud point with (3). To each succeeding sample of (1) a measured quantity of (2) was added and the mixture was titrated with (3). Weight measurements were made using an analytical balance. Titrations were performed using 5-mL certified micro burettes graduated in 0.01 mL divisions. The analytical method was used for determination of equilibrium liquid phases compositions. The mixture of (1), (2) and (3) was then agitated vigorously and allowed to separate into phases. Densities were used to determine compositions of the equilibrium phases. Refractive index readings were used primarily to identify phases and secondarily to check compositions from density measurements (see Tables 1 and 2).
Source and Purity of Materials:
(1) Commercial Solvents Corp.; purity 93.9 mass % with 2.3 mass % of nitromethane and 3.8 mass % of 2-nitropropane; n(25°C,D) = 1.3890.
(2) Fisher; certified reagent grade; b. p. = (97.0 to 97.4)°C, n(25°C,D) = 1.3871.
(3) Distilled.
Estimated Errors:
Temperature: ±1 K.