2
0
2009
yam
muk
0
journal
Original
Yamaguchi, A.[Atsushi]
Mukoubayashi, M.[Mitsuru]
Matsunami, T.[Tae]
Sato, H.[Haruki]
J. Chem. Eng. Data
2009
2020-09-29
p?Tx-Property Measurements Near Saturation in the Gaseous Phase for Propane + Isobutane
p?Tx-property measurements near saturation in the gaseous phase for propane (1) + isobutane (2) at x1 = 0.25 (w1 = 20.19 %), x1 = 0.5 (w1 = 43.14 %), and x1 = 0.80 (w1 = 75.22 %) are reported. The data near saturation in the gaseous phase are important information for deriving reliable property values such as specific heats near saturation or for determining the second and third virial coefficients. The measurements were performed using a magnetic suspension densimeter. 154 p?Tx values for propane + isobutane mixtures were obtained at the temperatures of (303.15 and 323.15) K and for pressures up to 980 kPa. The experimental uncertainties are estimated to be 10 mK for temperature, 0.45 kPa for pressure, (0.03 % + 0.005 kg*m-3) for density, and 0.31 % in mass fraction (0.32 % in mole fraction). The purities of propane and isobutane were both 99.99 % in mass fraction according to the report from the manufacturer. The measurements are used for assessing the reliability of existing equations of state.
10.1021/je900244c
12
54
3273-3275
1
InChI=1S/C3H8/c1-3-2/h3H2,1-2H3
ATUOYWHBWRKTHZ-UHFFFAOYSA-N
propane
n-propane
C3H8
1
Commercial source
1
99.99
4
Stated by supplier
2
InChI=1S/C4H10/c1-4(2)3/h4H,1-3H3
NNPPMTNAJDCUHE-UHFFFAOYSA-N
2-methylpropane
R-600a
isobutane
C4H10
1
Commercial source
1
99.99
4
Stated by supplier
1
1
1
2
1
Principal objective of the work
PW
TRC
12/17/2009
1
Mass density, kg/m3
Buoyancy - hydrostatic balance with magnetic suspension - two sinkers
Gas
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Gas
1
Mole fraction
1
Gas
2
Temperature, K
Gas
3
Pressure, kPa
Gas
1
0.244
3
2
323.15
5
3
590.1
4
1
13.582
5
1
0.042
1
0.244
3
2
323.15
5
3
600.1
4
1
13.847
5
1
0.043
1
0.244
3
2
323.15
5
3
609.5
4
1
14.1
5
1
0.043
1
0.244
3
2
323.15
5
3
620.5
4
1
14.391
5
1
0.043
1
0.244
3
2
323.15
5
3
629.7
4
1
14.643
5
1
0.044
1
0.244
3
2
323.15
5
3
630.5
4
1
14.658
5
1
0.043
1
0.244
3
2
323.15
5
3
640.7
4
1
14.937
5
1
0.044
1
0.244
3
2
323.15
5
3
650.3
4
1
15.201
5
1
0.044
1
0.244
3
2
323.15
5
3
651.3
4
1
15.223
5
1
0.044
1
0.244
3
2
323.15
5
3
660.6
4
1
15.487
5
1
0.044
1
0.244
3
2
323.15
5
3
670
4
1
15.744
5
1
0.045
1
0.244
3
2
323.15
5
3
679.7
4
1
16.015
5
1
0.045
1
0.244
3
2
323.15
5
3
690.2
4
1
16.31
5
1
0.045
1
0.244
3
2
323.15
5
3
691.1
4
1
16.328
5
1
0.045
1
0.244
3
2
323.15
5
3
700.1
4
1
16.592
5
1
0.046
1
0.244
3
2
323.15
5
3
709.8
4
1
16.868
5
1
0.046
1
0.244
3
2
323.15
5
3
710.3
4
1
16.875
5
1
0.046
1
0.244
3
2
323.15
5
3
720.6
4
1
17.177
5
1
0.047
1
0.244
3
2
323.15
5
3
730.4
4
1
17.456
5
1
0.047
1
0.244
3
2
323.15
5
3
730.5
4
1
17.456
5
1
0.047
1
0.244
3
2
323.15
5
3
740.4
4
1
17.75
5
1
0.048
1
0.244
3
2
323.15
5
3
749.8
4
1
18.022
5
1
0.048
1
0.244
3
2
323.15
5
3
750.2
4
1
18.029
5
1
0.048
1
0.244
3
2
323.15
5
3
761.2
4
1
18.357
5
1
0.048
1
0.244
3
2
323.15
5
3
769.7
4
1
18.602
5
1
0.049
1
0.244
3
2
323.15
5
3
790.6
4
1
19.228
5
1
0.05
1
0.244
3
2
323.15
5
3
670
4
1
15.744
5
1
0.045
1
0.249
3
2
323.15
5
3
600.6
4
1
13.833
5
1
0.042
1
0.249
3
2
323.15
5
3
600.7
4
1
13.848
5
1
0.042
1
0.249
3
2
323.15
5
3
610.4
4
1
14.09
5
1
0.042
1
0.249
3
2
323.15
5
3
620.1
4
1
14.354
5
1
0.044
1
0.249
3
2
323.15
5
3
620.7
4
1
14.369
5
1
0.044
1
0.249
3
2
323.15
5
3
630.3
4
1
14.633
5
1
0.043
1
0.249
3
2
323.15
5
3
630.5
4
1
14.64
5
1
0.043
1
0.249
3
2
323.15
5
3
640.1
4
1
14.889
5
1
0.044
1
0.249
3
2
323.15
5
3
640.9
4
1
14.923
5
1
0.044
1
0.249
3
2
323.15
5
3
650.1
4
1
15.168
5
1
0.044
1
0.249
3
2
323.15
5
3
660
4
1
15.436
5
1
0.044
1
0.249
3
2
323.15
5
3
660.1
4
1
15.447
5
1
0.045
1
0.249
3
2
323.15
5
3
670
4
1
15.714
5
1
0.045
1
0.249
3
2
323.15
5
3
670.1
4
1
15.719
5
1
0.045
1
0.249
3
2
323.15
5
3
680.3
4
1
15.998
5
1
0.045
1
0.249
3
2
323.15
5
3
680.4
4
1
16.006
5
1
0.045
1
0.249
3
2
323.15
5
3
690.2
4
1
16.277
5
1
0.046
1
0.249
3
2
323.15
5
3
700.3
4
1
16.571
5
1
0.046
1
0.249
3
2
323.15
5
3
700.4
4
1
16.571
5
1
0.046
1
0.249
3
2
323.15
5
3
710
4
1
16.835
5
1
0.046
1
0.249
3
2
323.15
5
3
710.1
4
1
16.843
5
1
0.046
1
0.249
3
2
323.15
5
3
720.3
4
1
17.129
5
1
0.047
1
0.249
3
2
323.15
5
3
720.4
4
1
17.137
5
1
0.047
1
0.249
3
2
323.15
5
3
730
4
1
17.416
5
1
0.047
1
0.249
3
2
323.15
5
3
730.3
4
1
17.408
5
1
0.047
1
0.249
3
2
323.15
5
3
739.8
4
1
17.687
5
1
0.047
1
0.249
3
2
323.15
5
3
740
4
1
17.697
5
1
0.047
1
0.249
3
2
323.15
5
3
750
4
1
17.989
5
1
0.048
1
0.249
3
2
323.15
5
3
759.7
4
1
18.276
5
1
0.048
1
0.249
3
2
323.15
5
3
759.9
4
1
18.276
5
1
0.048
1
0.249
3
2
323.15
5
3
769.9
4
1
18.577
5
1
0.049
1
0.249
3
2
323.15
5
3
770
4
1
18.577
5
1
0.049
1
0.249
3
2
323.15
5
3
780
4
1
18.871
5
1
0.05
1
0.249
3
2
323.15
5
3
780.5
4
1
18.894
5
1
0.05
1
0.249
3
2
323.15
5
3
799.9
4
1
19.467
5
1
0.051
1
0.249
3
2
323.15
5
3
650.1
4
1
15.168
5
1
0.044
1
0.249
3
2
323.15
5
3
690.2
4
1
16.285
5
1
0.046
1
0.249
3
2
323.15
5
3
750
4
1
17.996
5
1
0.048
1
0.499
3
2
323.15
5
3
770.4
4
1
16.983
5
1
0.049
1
0.499
3
2
323.15
5
3
770.7
4
1
16.982
5
1
0.049
1
0.499
3
2
323.15
5
3
780.2
4
1
17.239
5
1
0.049
1
0.499
3
2
323.15
5
3
780.3
4
1
17.244
5
1
0.049
1
0.499
3
2
323.15
5
3
790.6
4
1
17.513
5
1
0.05
1
0.499
3
2
323.15
5
3
800.2
4
1
17.765
5
1
0.051
1
0.499
3
2
323.15
5
3
810.5
4
1
18.042
5
1
0.051
1
0.499
3
2
323.15
5
3
820.2
4
1
18.299
5
1
0.051
1
0.499
3
2
323.15
5
3
820.4
4
1
18.307
5
1
0.051
1
0.499
3
2
323.15
5
3
830.3
4
1
18.572
5
1
0.052
1
0.499
3
2
323.15
5
3
840.3
4
1
18.844
5
1
0.052
1
0.499
3
2
323.15
5
3
840.4
4
1
18.848
5
1
0.052
1
0.499
3
2
323.15
5
3
850.3
4
1
19.121
5
1
0.052
1
0.499
3
2
323.15
5
3
860.2
4
1
19.387
5
1
0.052
1
0.499
3
2
323.15
5
3
860.4
4
1
19.398
5
1
0.052
1
0.499
3
2
323.15
5
3
870.4
4
1
19.669
5
1
0.053
1
0.499
3
2
323.15
5
3
879.9
4
1
19.938
5
1
0.053
1
0.499
3
2
323.15
5
3
880.4
4
1
19.948
5
1
0.053
1
0.499
3
2
323.15
5
3
890.2
4
1
20.228
5
1
0.053
1
0.499
3
2
323.15
5
3
900.1
4
1
20.506
5
1
0.053
1
0.499
3
2
323.15
5
3
900.6
4
1
20.517
5
1
0.053
1
0.499
3
2
323.15
5
3
910.1
4
1
20.784
5
1
0.053
1
0.499
3
2
323.15
5
3
920.3
4
1
21.078
5
1
0.053
1
0.499
3
2
323.15
5
3
920.6
4
1
21.087
5
1
0.053
1
0.499
3
2
323.15
5
3
930.3
4
1
21.359
5
1
0.053
1
0.499
3
2
323.15
5
3
939.7
4
1
21.637
5
1
0.053
1
0.499
3
2
323.15
5
3
939.8
4
1
21.635
5
1
0.053
1
0.499
3
2
323.15
5
3
950.6
4
1
21.949
5
1
0.053
1
0.499
3
2
323.15
5
3
960.2
4
1
22.222
5
1
0.053
1
0.499
3
2
323.15
5
3
960.3
4
1
22.242
5
1
0.052
1
0.499
3
2
323.15
5
3
970.3
4
1
22.521
5
1
0.052
1
0.499
3
2
323.15
5
3
978.9
4
1
22.767
5
1
0.052
1
0.499
3
2
323.15
5
3
979.6
4
1
22.791
5
1
0.052
1
0.499
3
2
323.15
5
3
800.2
4
1
17.769
5
1
0.051
1
0.503
3
2
303.15
5
3
440.3
4
1
9.824
4
1
0.035
1
0.503
3
2
303.15
5
3
440.7
4
1
9.834
4
1
0.035
1
0.503
3
2
303.15
5
3
449.9
4
1
10.061
5
1
0.036
1
0.503
3
2
303.15
5
3
450
4
1
10.069
5
1
0.036
1
0.503
3
2
303.15
5
3
460
4
1
10.317
5
1
0.036
1
0.503
3
2
303.15
5
3
460.4
4
1
10.325
5
1
0.036
1
0.503
3
2
303.15
5
3
470.2
4
1
10.57
5
1
0.037
1
0.503
3
2
303.15
5
3
470.5
4
1
10.581
5
1
0.037
1
0.503
3
2
303.15
5
3
480
4
1
10.823
5
1
0.037
1
0.503
3
2
303.15
5
3
480.3
4
1
10.83
5
1
0.037
1
0.503
3
2
303.15
5
3
489.7
4
1
11.072
5
1
0.037
1
0.503
3
2
303.15
5
3
490.4
4
1
11.087
5
1
0.037
1
0.503
3
2
303.15
5
3
500.3
4
1
11.344
5
1
0.038
1
0.503
3
2
303.15
5
3
500.4
4
1
11.344
5
1
0.037
1
0.503
3
2
303.15
5
3
510.3
4
1
11.608
5
1
0.038
1
0.503
3
2
303.15
5
3
510.5
4
1
11.6
5
1
0.037
1
0.503
3
2
303.15
5
3
520.4
4
1
11.861
5
1
0.038
1
0.503
3
2
303.15
5
3
530.4
4
1
12.121
5
1
0.038
1
0.503
3
2
303.15
5
3
530.7
4
1
12.129
5
1
0.038
1
0.503
3
2
303.15
5
3
540.1
4
1
12.37
5
1
0.038
1
0.503
3
2
303.15
5
3
540.2
4
1
12.378
5
1
0.038
1
0.503
3
2
303.15
5
3
550.1
4
1
12.642
5
1
0.038
1
0.503
3
2
303.15
5
3
550.3
4
1
12.642
5
1
0.038
1
0.503
3
2
303.15
5
3
560.3
4
1
12.914
5
1
0.038
1
0.503
3
2
303.15
5
3
564.6
4
1
13.019
5
1
0.039
1
0.503
3
2
303.15
5
3
570.1
4
1
13.17
5
1
0.039
1
0.503
3
2
303.15
5
3
570.4
4
1
13.178
5
1
0.039
1
0.503
3
2
303.15
5
3
575.1
4
1
13.306
5
1
0.039
1
0.503
3
2
303.15
5
3
580.1
4
1
13.434
5
1
0.039
1
0.503
3
2
303.15
5
3
580.7
4
1
13.453
5
1
0.039
1
0.503
3
2
303.15
5
3
584.3
4
1
13.548
5
1
0.039
1
0.503
3
2
303.15
5
3
500.4
4
1
11.344
5
1
0.037
1
0.503
3
2
303.15
5
3
520.4
4
1
11.864
5
1
0.038
1
0.503
3
2
303.15
5
3
540.2
4
1
12.378
5
1
0.038
1
0.503
3
2
303.15
5
3
560.3
4
1
12.914
5
1
0.038
1
0.799
3
2
303.15
5
3
599.9
4
1
12.55
5
1
0.039
1
0.799
3
2
303.15
5
3
600.1
4
1
12.557
5
1
0.039
1
0.799
3
2
303.15
5
3
609.7
4
1
12.784
5
1
0.039
1
0.799
3
2
303.15
5
3
610.2
4
1
12.802
5
1
0.039
1
0.799
3
2
303.15
5
3
620.2
4
1
13.04
5
1
0.021
1
0.799
3
2
303.15
5
3
630.2
4
1
13.289
5
1
0.04
1
0.799
3
2
303.15
5
3
639.7
4
1
13.516
5
1
0.04
1
0.799
3
2
303.15
5
3
649.7
4
1
13.757
5
1
0.04
1
0.799
3
2
303.15
5
3
659.8
4
1
14.006
5
1
0.04
1
0.799
3
2
303.15
5
3
680.1
4
1
14.516
5
1
0.041
1
0.799
3
2
303.15
5
3
700
4
1
15.01
5
1
0.041
1
0.799
3
2
303.15
5
3
720
4
1
15.515
5
1
0.041
1
0.799
3
2
303.15
5
3
739.9
4
1
16.028
5
1
0.041
1
0.799
3
2
303.15
5
3
760.5
4
1
16.557
5
1
0.041
1
0.799
3
2
303.15
5
3
770.4
4
1
16.821
5
1
0.041
1
0.799
3
2
303.15
5
3
779.5
4
1
17.055
5
1
0.041
1
0.799
3
2
303.15
5
3
780.1
4
1
17.073
5
1
0.024
1
0.799
3
2
303.15
5
3
789.8
4
1
17.319
5
1
0.041
1
0.799
3
2
303.15
5
3
790.1
4
1
17.342
5
1
0.041
1
0.799
3
2
303.15
5
3
799.6
4
1
17.59
5
1
0.041