2
0
2019
raz
hal
0
journal
Original
Raza, M. A.[Mohsin Ali]
Hallett, P. D.[Paul D.]
Liu, X.[Xiangyang]
He, M.[Maogang]
Afzal, W.[Waheed]
J. Chem. Eng. Data
2019
2020-09-29
Surface Tension of Aqueous Solutions of Small-Chain Amino and Organic Acids
Surface tension was measured for aqueous solutions of DL-malic acid, L-glutamine, L-serine, L-proline, L-methionine, L-valine, and L-lactic acid as a function of concentration using a Du Nouy ring over a temperature range between 298 K and 328 K at 101 kPa atmospheric pressure. Surface tensions of several concentrations of each organic acid were measured to develop four isotherms with a temperature ramp of 10 K starting from 298 K. Cohesive forces between molecules were weakened by temperature rise, resulting in decreased surface tension. Mass concentration and temperature effects on surface tension were reflected by the slopes of the relationships between surface tension and either mass concentration or temperature, respectively. In this study L-serine and L-glutamine showed hydrophilic behaviour while Lproline, L-methionine, DL-malic acid, L-valine, and L-lactic acid had hydrophobic behaviour. For all acids studied here, increased temperature caused decreased surface tension of aqueous solutions of solute.
10.1021/acs.jced.9b00026
12
64
5049-5056
1
InChI=1S/C5H10N2O3/c6-3(5(9)10)1-2-4(7)8/h3H,1-2,6H2,(H2,7,8)(H,9,10)/t3-/m0/s1
ZDXPYRJPNDTMRX-VKHMYHEASA-N
L-glutamine
(S)-2,5-diamino-5-oxopentanoic acid
.gamma.-glutamine
2-aminoglutaramic acid
L-(+)-glutamine
L-2-aminoglutaramidic acid
L-glutamic acid .gamma.-amide
glumin
glutamic acid 5-amide
glutamic acid amide
glutamine
glutamine, L-
levoglutamide
pentanoic acid, 2,5-diamino-5-oxo-, (S)-
C5H10N2O3
1
Commercial source
1
99
2
Stated by supplier
2
InChI=1S/C3H7NO3/c4-2(1-5)3(6)7/h2,5H,1,4H2,(H,6,7)/t2-/m0/s1
MTCFGRXMJLQNBG-REOHCLBHSA-N
L-serine
(S)-(+)-serine
(S)-2-amino-3-hydroxypropanoic acid
(S)-serine
.alpha.-amino-.beta.-hydroxypropionic acid
.beta.-hydroxyalanine
C3H7NO3
1
Commercial source
1
99
2
Stated by supplier
3
InChI=1S/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-/m0/s1
FFEARJCKVFRZRR-BYPYZUCNSA-N
L-methionine
(S)-(+)-methionine
(S)-2-amino-4-(methylthio)-butanoic acid, ,
(S)-2-amino-4-(methylthio)butanoic acid
.gamma.-methylthio-.alpha.-aminobutyric acid
2-amino-4-(methylthio)butyric acid
L-(-)-methionine
L-.alpha.-amino-.gamma.-methylthiobutyric acid
S-methionine
l-methionine
C5H11NO2S
1
Commercial source
1
99
2
Stated by supplier
4
InChI=1S/C5H9NO2/c7-5(8)4-2-1-3-6-4/h4,6H,1-3H2,(H,7,8)/t4-/m0/s1
ONIBWKKTOPOVIA-BYPYZUCNSA-N
L-proline
(-)-(S)-proline
(S)-2-pyrrolidinecarboxylic acid
C5H9NO2
1
Commercial source
1
99
2
Stated by supplier
5
InChI=1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)
BJEPYKJPYRNKOW-UHFFFAOYSA-N
hydroxybutanedioic acid
butanedioic acid, hydroxy-
dl-malic acid
hydroxyethane-1,2-dicarboxylic acid
hydroxysuccinic acid
malic acid
C4H6O5
1
Commercial source
1
98
2
Stated by supplier
6
InChI=1S/C5H11NO2/c1-3(2)4(6)5(7)8/h3-4H,6H2,1-2H3,(H,7,8)/t4-/m0/s1
KZSNJWFQEVHDMF-BYPYZUCNSA-N
L-valine
(S)-(+)-valine
(S)-3-amino-2-methylbutanoic acid
(S)-Valine
L-2-amino-3-methylbutanoic acid
L-2-amino-3-methylbutyric acid
L-2-aminoisovaleric acid
butanoic acid, 2-amino-3-methyl-, (S)-
C5H11NO2
1
Commercial source
1
99
2
Stated by supplier
7
InChI=1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)/t2-/m0/s1
JVTAAEKCZFNVCJ-REOHCLBHSA-N
(S)-2-hydroxypropanoic acid
L-2-hydroxypropanoic acid
L-lactic acid
propanoic acid, 2-hydroxy-, (S)-
C3H6O3
1
Commercial source
1
98
2
Stated by supplier
8
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Commercial source
1
99.9
3
Estimated by the compiler
9
InChI=1S/C2H6O/c1-2-3/h3H,2H2,1H3
LFQSCWFLJHTTHZ-UHFFFAOYSA-N
ethanol
ethyl alcohol
C2H6O
1
Commercial source
1
99.5
3
Estimated by the compiler
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298
3
1
0.07144
4
1
0.00091
1
308
3
1
0.06972
4
1
0.0009
1
318
3
1
0.06844
4
1
0.00087
1
328
3
1
0.06668
4
1
0.00085
1
298
3
1
0.07106
4
1
0.0009
1
308
3
1
0.0691
4
1
0.00088
1
318
3
1
0.06831
4
1
0.00087
1
328
3
1
0.06641
4
1
0.00085
1
298
3
1
0.07146
4
1
0.00091
1
308
3
1
0.06971
4
1
0.00089
1
318
3
1
0.06851
4
1
0.00087
1
328
3
1
0.06666
4
1
0.00085
1
298
3
1
0.07152
4
1
0.00091
1
308
3
1
0.06994
4
1
0.00089
1
318
3
1
0.06854
4
1
0.00088
1
328
3
1
0.06678
4
1
0.00085
1
298
3
1
0.07161
4
1
0.00091
1
308
3
1
0.0701
4
1
0.00089
1
318
3
1
0.06856
4
1
0.00088
1
328
3
1
0.06676
4
1
0.00085
1
308
3
1
0.06973
4
1
0.00089
1
318
3
1
0.0683
4
1
0.00087
1
328
3
1
0.06681
4
1
0.00085
1
298
3
1
0.07153
4
1
0.00091
1
308
3
1
0.07002
4
1
0.00089
1
318
3
1
0.06848
4
1
0.00087
1
328
3
1
0.06718
4
1
0.00086
1
298
3
1
0.07204
4
1
0.00092
1
313
3
1
0.06989
4
1
0.00089
2
1
1
8
1
Principal objective of the work
EP
EP
9/23/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Mass fraction
1
Liquid
1
298
3
2
0
3
1
0.07106
4
1
0.0009
1
298
3
2
0.00499
3
1
0.07143
4
1
0.00091
1
298
3
2
0.00998
3
1
0.07149
4
1
0.00091
1
298
3
2
0.01501
4
1
0.07153
4
1
0.00091
1
298
3
2
0.02001
4
1
0.07155
4
1
0.00091
1
298
3
2
0.02499
4
1
0.07155
4
1
0.00091
1
298
3
2
0.02999
4
1
0.07155
4
1
0.00091
1
308
3
2
0
3
1
0.0691
4
1
0.00088
1
308
3
2
0.00499
3
1
0.06929
4
1
0.00088
1
308
3
2
0.00998
3
1
0.06965
4
1
0.00089
1
308
3
2
0.01501
4
1
0.06978
4
1
0.00089
1
308
3
2
0.02001
4
1
0.06989
4
1
0.00089
1
308
3
2
0.02499
4
1
0.06996
4
1
0.00089
1
308
3
2
0.02999
4
1
0.07002
4
1
0.00089
1
318
3
2
0
3
1
0.06831
4
1
0.00087
1
318
3
2
0.00499
3
1
0.06834
4
1
0.00087
1
318
3
2
0.00998
3
1
0.06842
4
1
0.00087
1
318
3
2
0.01501
4
1
0.06859
4
1
0.00088
1
318
3
2
0.02001
4
1
0.06858
4
1
0.00088
1
318
3
2
0.02499
4
1
0.06864
4
1
0.00088
1
318
3
2
0.02999
4
1
0.06867
4
1
0.00088
1
328
3
2
0
3
1
0.06641
4
1
0.00085
1
328
3
2
0.00499
3
1
0.06655
4
1
0.00085
1
328
3
2
0.00998
3
1
0.06669
4
1
0.00085
1
328
3
2
0.01501
4
1
0.06676
4
1
0.00085
1
328
3
2
0.02001
4
1
0.06685
4
1
0.00086
1
328
3
2
0.02499
4
1
0.06698
4
1
0.00086
1
328
3
2
0.02999
4
1
0.06704
4
1
0.00086
3
1
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mass fraction
1
Liquid
2
Temperature, K
Liquid
3
Pressure, kPa
Liquid
1
0.005
1
2
298
3
3
101
3
1
998.8
4
1
0.6
4
2
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Mass fraction
2
Liquid
1
298
3
2
0
3
1
0.07146
4
1
0.00091
1
298
3
2
0.00504
3
1
0.07153
4
1
0.00091
1
298
3
2
0.01
4
1
0.07164
4
1
0.00091
1
298
3
2
0.02001
4
1
0.0717
4
1
0.00091
1
298
3
2
0.03
4
1
0.07185
4
1
0.00091
1
298
3
2
0.03999
4
1
0.07198
4
1
0.00092
1
298
3
2
0.05
4
1
0.07212
4
1
0.00092
1
308
3
2
0
3
1
0.06971
4
1
0.00089
1
308
3
2
0.00504
3
1
0.06985
4
1
0.00089
1
308
3
2
0.01
4
1
0.06998
4
1
0.00089
1
308
3
2
0.02001
4
1
0.07015
4
1
0.00089
1
308
3
2
0.03
4
1
0.07031
4
1
0.0009
1
308
3
2
0.03999
4
1
0.07044
4
1
0.0009
1
308
3
2
0.05
4
1
0.07056
4
1
0.0009
1
318
3
2
0
3
1
0.06851
4
1
0.00087
1
318
3
2
0.00504
3
1
0.06858
4
1
0.00088
1
318
3
2
0.01
4
1
0.0686
4
1
0.00088
1
318
3
2
0.02001
4
1
0.06884
4
1
0.00088
1
318
3
2
0.03
4
1
0.06887
4
1
0.00088
1
318
3
2
0.03999
4
1
0.06909
4
1
0.00088
1
318
3
2
0.05
4
1
0.06923
4
1
0.00088
1
328
3
2
0
3
1
0.06666
4
1
0.00085
1
328
3
2
0.00504
3
1
0.06676
4
1
0.00085
1
328
3
2
0.01
4
1
0.06684
4
1
0.00086
1
328
3
2
0.02001
4
1
0.06701
4
1
0.00086
1
328
3
2
0.03
4
1
0.06719
4
1
0.00086
1
328
3
2
0.03999
4
1
0.06728
4
1
0.00086
1
328
3
2
0.05
4
1
0.0675
4
1
0.00086
5
2
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mass fraction
2
Liquid
2
Temperature, K
Liquid
3
Pressure, kPa
Liquid
1
0.005
1
2
298
3
3
101
3
1
999.1
4
1
0.6
6
3
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Mass fraction
3
Liquid
1
298
3
2
0
3
1
0.07152
4
1
0.00091
1
298
3
2
0.005
3
1
0.07139
4
1
0.00091
1
298
3
2
0.01
4
1
0.0713
4
1
0.00091
1
298
3
2
0.02
4
1
0.07102
4
1
0.0009
1
298
3
2
0.03
4
1
0.07077
4
1
0.0009
1
298
3
2
0.04001
4
1
0.07061
4
1
0.0009
1
308
3
2
0
3
1
0.06994
4
1
0.00089
1
308
3
2
0.005
3
1
0.06989
4
1
0.00089
1
308
3
2
0.01
4
1
0.06969
4
1
0.00089
1
308
3
2
0.02
4
1
0.06945
4
1
0.00089
1
308
3
2
0.03
4
1
0.06915
4
1
0.00088
1
308
3
2
0.04001
4
1
0.0689
4
1
0.00088
1
318
3
2
0
3
1
0.06854
4
1
0.00088
1
318
3
2
0.005
3
1
0.0684
4
1
0.00087
1
318
3
2
0.01
4
1
0.0683
4
1
0.00087
1
318
3
2
0.02
4
1
0.06806
4
1
0.00087
1
318
3
2
0.03
4
1
0.06774
4
1
0.00087
1
318
3
2
0.04001
4
1
0.06728
4
1
0.00086
1
328
3
2
0
3
1
0.06678
4
1
0.00085
1
328
3
2
0.005
3
1
0.06665
4
1
0.00085
1
328
3
2
0.01
4
1
0.06656
4
1
0.00085
1
328
3
2
0.02
4
1
0.06632
4
1
0.00085
1
328
3
2
0.03
4
1
0.06578
4
1
0.00084
1
328
3
2
0.04001
4
1
0.06497
4
1
0.00083
7
3
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mass fraction
3
Liquid
2
Temperature, K
Liquid
3
Pressure, kPa
Liquid
1
0.005
1
2
298
3
3
101
3
1
998.5
4
1
0.6
8
4
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Mass fraction
4
Liquid
1
298
3
2
0
3
1
0.07161
4
1
0.00091
1
298
3
2
0.01996
4
1
0.07156
4
1
0.00091
1
298
3
2
0.03996
4
1
0.07156
4
1
0.00091
1
298
3
2
0.05995
4
1
0.07155
4
1
0.00091
1
298
3
2
0.07996
4
1
0.0715
4
1
0.00091
1
298
3
2
0.09995
4
1
0.07145
4
1
0.00091
1
308
3
2
0
3
1
0.0701
4
1
0.00089
1
308
3
2
0.01996
4
1
0.07014
4
1
0.00089
1
308
3
2
0.03996
4
1
0.07013
4
1
0.00089
1
308
3
2
0.05995
4
1
0.07012
4
1
0.00089
1
308
3
2
0.07996
4
1
0.07005
4
1
0.00089
1
308
3
2
0.09995
4
1
0.06995
4
1
0.00089
1
318
3
2
0
3
1
0.06856
4
1
0.00088
1
318
3
2
0.01996
4
1
0.06851
4
1
0.00088
1
318
3
2
0.03996
4
1
0.06851
4
1
0.00088
1
318
3
2
0.05995
4
1
0.06846
4
1
0.00088
1
318
3
2
0.07996
4
1
0.06844
4
1
0.00088
1
318
3
2
0.09995
4
1
0.0684
4
1
0.00088
1
328
3
2
0
3
1
0.06676
4
1
0.00085
1
328
3
2
0.01996
4
1
0.0668
4
1
0.00086
1
328
3
2
0.03996
4
1
0.06679
4
1
0.00086
1
328
3
2
0.05995
4
1
0.06675
4
1
0.00086
1
328
3
2
0.07996
4
1
0.06667
4
1
0.00085
1
328
3
2
0.09995
4
1
0.06646
4
1
0.00085
9
4
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mass fraction
4
Liquid
2
Temperature, K
Liquid
3
Pressure, kPa
Liquid
1
0.02
1
2
298
3
3
101
3
1
1002.6
5
1
0.6
10
5
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Mass fraction
5
Liquid
1
298
3
2
0
3
1
0.07152
4
1
0.00091
1
298
3
2
0.01049
4
1
0.07139
4
1
0.00091
1
298
3
2
0.02026
4
1
0.0712
4
1
0.00091
1
298
3
2
0.03004
4
1
0.07109
4
1
0.00091
1
298
3
2
0.04002
4
1
0.07092
4
1
0.0009
1
298
3
2
0.06001
4
1
0.07061
4
1
0.0009
1
298
3
2
0.07998
4
1
0.07044
4
1
0.0009
1
298
3
2
0.10001
5
1
0.0702
4
1
0.0009
1
308
3
2
0
3
1
0.06973
4
1
0.00089
1
308
3
2
0.01049
4
1
0.06964
4
1
0.00089
1
308
3
2
0.02026
4
1
0.06949
4
1
0.00089
1
308
3
2
0.03004
4
1
0.06942
4
1
0.00089
1
308
3
2
0.04002
4
1
0.06928
4
1
0.00089
1
308
3
2
0.06001
4
1
0.06918
4
1
0.00088
1
308
3
2
0.07998
4
1
0.06883
4
1
0.00088
1
308
3
2
0.10001
5
1
0.06862
4
1
0.00088
1
318
3
2
0
3
1
0.0683
4
1
0.00087
1
318
3
2
0.01049
4
1
0.06816
4
1
0.00087
1
318
3
2
0.02026
4
1
0.06816
4
1
0.00087
1
318
3
2
0.03004
4
1
0.06811
4
1
0.00087
1
318
3
2
0.04002
4
1
0.06778
4
1
0.00087
1
318
3
2
0.06001
4
1
0.06763
4
1
0.00087
1
318
3
2
0.07998
4
1
0.06749
4
1
0.00087
1
318
3
2
0.10001
5
1
0.06725
4
1
0.00086
1
328
3
2
0
3
1
0.06681
4
1
0.00085
1
328
3
2
0.01049
4
1
0.06667
4
1
0.00085
1
328
3
2
0.02026
4
1
0.06654
4
1
0.00085
1
328
3
2
0.03004
4
1
0.06648
4
1
0.00085
1
328
3
2
0.04002
4
1
0.06643
4
1
0.00085
1
328
3
2
0.06001
4
1
0.06624
4
1
0.00085
1
328
3
2
0.07998
4
1
0.06605
4
1
0.00085
1
328
3
2
0.10001
5
1
0.06589
4
1
0.00085
11
5
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mass fraction
5
Liquid
2
Temperature, K
Liquid
3
Pressure, kPa
Liquid
1
0.01
1
2
298
3
3
101
3
1
1000.8
5
1
0.6
12
6
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Mass fraction
6
Liquid
1
298
3
2
0.005
1
1
0.07053
4
1
0.0009
1
298
3
2
0.01
2
1
0.0705
4
1
0.0009
1
298
3
2
0.02
2
1
0.06948
4
1
0.00089
1
298
3
2
0.03
2
1
0.0684
4
1
0.00087
1
298
3
2
0.04
2
1
0.06712
4
1
0.00086
1
308
3
2
0.005
1
1
0.06919
4
1
0.00088
1
308
3
2
0.01
2
1
0.06893
4
1
0.00088
1
308
3
2
0.02
2
1
0.06817
4
1
0.00087
1
308
3
2
0.03
2
1
0.06708
4
1
0.00086
1
308
3
2
0.04
2
1
0.06641
4
1
0.00085
1
318
3
2
0.005
1
1
0.06761
4
1
0.00086
1
318
3
2
0.01
2
1
0.06761
4
1
0.00086
1
318
3
2
0.02
2
1
0.06654
4
1
0.00085
1
318
3
2
0.03
2
1
0.06536
4
1
0.00084
1
318
3
2
0.04
2
1
0.06453
4
1
0.00083
1
328
3
2
0.005
1
1
0.0663
4
1
0.00085
1
328
3
2
0.01
2
1
0.06602
4
1
0.00085
1
328
3
2
0.02
2
1
0.06514
4
1
0.00084
1
328
3
2
0.03
2
1
0.06384
4
1
0.00082
1
328
3
2
0.04
2
1
0.06326
4
1
0.00081
13
6
1
8
1
Principal objective of the work
EP
EP
9/3/2019
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mass fraction
6
Liquid
2
Temperature, K
Liquid
3
Pressure, kPa
Liquid
1
0.005
1
2
298
3
3
101
3
1
998.1
4
1
0.6
14
7
1
8
1
Principal objective of the work
EP
EP
9/23/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Mass fraction
7
Liquid
1
298
3
2
0
3
1
0.07153
4
1
0.00091
1
298
3
2
0.002
1
1
0.07066
4
1
0.0009
1
298
3
2
0.004
1
1
0.06969
4
1
0.00089
1
298
3
2
0.006
1
1
0.06873
4
1
0.00088
1
298
3
2
0.008
1
1
0.06769
4
1
0.00087
1
308
3
2
0
3
1
0.07002
4
1
0.00089
1
308
3
2
0.002
1
1
0.06932
4
1
0.00088
1
308
3
2
0.004
1
1
0.06836
4
1
0.00087
1
308
3
2
0.006
1
1
0.06763
4
1
0.00086
1
308
3
2
0.008
1
1
0.06706
4
1
0.00086
1
318
3
2
0
3
1
0.06848
4
1
0.00087
1
318
3
2
0.002
1
1
0.06804
4
1
0.00087
1
318
3
2
0.004
1
1
0.06736
4
1
0.00086
1
318
3
2
0.006
1
1
0.06646
4
1
0.00085
1
318
3
2
0.008
1
1
0.06596
4
1
0.00085
1
328
3
2
0
3
1
0.06718
4
1
0.00086
1
328
3
2
0.002
1
1
0.06707
4
1
0.00086
1
328
3
2
0.004
1
1
0.06617
4
1
0.00085
1
328
3
2
0.006
1
1
0.06534
4
1
0.00084
1
328
3
2
0.008
1
1
0.06492
4
1
0.00083
15
7
1
8
1
Principal objective of the work
EP
EP
9/23/2019
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mass fraction
7
Liquid
2
Temperature, K
Liquid
3
Pressure, kPa
Liquid
1
0.01
1
2
298
3
3
101
3
1
999.5
4
1
0.6
16
9
1
8
1
Principal objective of the work
EP
EP
9/23/2019
1
Surface tension liquid-gas, N/m
Ring tensiometer
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Mass fraction
9
Liquid
1
298
3
2
0
3
1
0.07204
4
1
0.00092
1
298
3
2
0.05
1
1
0.05514
4
1
0.00072
1
298
3
2
0.1
2
1
0.04734
4
1
0.00063
1
298
3
2
0.15
2
1
0.04196
4
1
0.00057
1
298
3
2
0.2
2
1
0.0382
4
1
0.00052
1
313
3
2
0
3
1
0.06989
4
1
0.00089
1
313
3
2
0.05
1
1
0.05313
4
1
0.0007
1
313
3
2
0.1
2
1
0.04592
4
1
0.00061
1
313
3
2
0.15
2
1
0.04041
4
1
0.00055
1
313
3
2
0.2
2
1
0.03671
4
1
0.00051