2
0
2010
iva
leb
0
journal
Original
Ivanov, E. V.[Evgeniy V.]
Lebedeva, E. Y.[Elena Y.]
Abrosimov, V. K.[Vladimir K.]
Thermochim. Acta
2010
2020-09-29
Volume-related interaction parameters for dilute solutions of tetramethylurea in normal and heavy water between 278.15 K and 318.15 K
Density measurements were carried out on dilute solutions of tetramethylurea (TMU) in normal and heavy water in the aquamolality ranges 0.058 - 1.74 and 0.052 - 1.72, respectively, at 278.15, 288.15, 298.15, 308.15, and 318.15 K. The excess partial molar volumes of TMU ( E, V ) and volume second virial coefficient (vxx), calculated from the densities of the H/D isotopically distinguishable solutions, are negative, which indicate that the solute has a predominantly structure-making effect on aqueous surroundings. With decreasing temperature and on going from protiated solvent to deuterated one the values of E, V and vxx become more negative, suggesting that the hydration sphere around a TMU molecule is more structured in the specified cases. The obtained results were discussed allowing for enthalpic and some other characteristics of TMU solutions in normal and heavy water.
Tetramethylurea
Density
Partial and excess volumes
Solvent isotope effects
Heavy water
Binary mixtures
Intermolecular interactions
10.1016/j.tca.2009.12.008
1-2
500
38-43
1
InChI=1S/C5H12N2O/c1-6(2)5(8)7(3)4/h1-4H3
AVQQQNCBBIEMEU-UHFFFAOYSA-N
tetramethylurea
1,1,3,3-tetramethylurea
N,N,N',N'-tetramethylurea
urea, 1,1,3,3-tetramethyl-
urea, tetramethyl
C5H12N2O
1
Commercial source
1
Dried in a desiccator
Fractional distillation
Molecular sieve treatment
Dried in a desiccator
Fractional distillation
Molecular sieve treatment
Dried in a desiccator
Fractional distillation
Molecular sieve treatment
2
99.9
3
HPLC
3
0.01
1
Karl Fischer titration
2
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Synthesized by the authors
1
Fractional distillation
2
99.9
3
Estimated by the compiler
3
InChI=1S/H2O/h1H2/i/hD2
XLYOFNOQVPJJNP-ZSJDYOACSA-N
water-d2
deuterium oxide
deuterium oxide [D2O]
deuterium oxide-d2
dideuterium monoxide
dideuterium oxide
heavy water
D2O
1
Commercial source
1
99.9
3
Density
1
1
1
Principal objective of the work
GPC
TRC
3/10/2010
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Pressure, kPa
Liquid
101.325
6
1
Temperature, K
Liquid
1
278.15
5
1
980.34
5
1
0.05
1
288.15
5
1
971.2
5
1
0.05
1
298.15
5
1
962.04
5
1
0.05
1
308.15
5
1
952.84
5
1
0.06
1
318.15
5
1
943.62
5
1
0.06
2
2
1
Principal objective of the work
VVD
TRC
3/10/2010
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Pressure, kPa
Liquid
101
3
1
Temperature, K
Liquid
1
278.15
5
1
999.965
6
1
0.042
1
288.15
5
1
999.101
6
1
0.043
1
298.15
5
1
997.047
6
1
0.043
1
308.15
5
1
994.035
6
1
0.044
1
318.15
5
1
990.216
6
1
0.045
3
3
1
Principal objective of the work
VVD
TRC
3/10/2010
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Pressure, kPa
Liquid
101
3
1
Temperature, K
Liquid
1
278.15
5
1
1105.49
6
1
0.07
1
288.15
5
1
1105.75
6
1
0.07
1
298.15
5
1
1104.35
6
1
0.07
1
308.15
5
1
1101.62
6
1
0.07
1
318.15
5
1
1097.82
6
1
0.07
4
1
1
2
1
Principal objective of the work
GPC
TRC
3/10/2010
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
2
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Pressure, kPa
Liquid
101
3
1
Temperature, K
Liquid
2
Molality, mol/kg
1
Liquid
1
278.15
5
2
0
2
1
999.965
6
1
0.042
1
278.15
5
2
0.057643
5
1
1000.12
6
1
0.04
1
278.15
5
2
0.088271
5
1
1000.2
6
1
0.04
1
278.15
5
2
0.13094
5
1
1000.32
6
1
0.04
1
278.15
5
2
0.14335
5
1
1000.35
6
1
0.04
1
278.15
5
2
0.27635
5
1
1000.79
6
1
0.04
1
278.15
5
2
0.4159
5
1
1001.29
6
1
0.04
1
278.15
5
2
0.58821
5
1
1001.97
6
1
0.04
1
278.15
5
2
0.75921
5
1
1002.72
6
1
0.04
1
278.15
5
2
0.97864
5
1
1003.73
6
1
0.04
1
278.15
5
2
1.1038
5
1
1004.32
6
1
0.04
1
278.15
5
2
1.3398
5
1
1005.47
6
1
0.04
1
278.15
5
2
1.3481
5
1
1005.51
6
1
0.04
1
278.15
5
2
1.6776
5
1
1007.1
6
1
0.04
1
278.15
5
2
1.7449
5
1
1007.42
6
1
0.04
1
288.15
5
2
0
2
1
999.101
6
1
0.043
1
288.15
5
2
0.057643
5
1
999.2
5
1
0.04
1
288.15
5
2
0.088271
5
1
999.26
5
1
0.04
1
288.15
5
2
0.13094
5
1
999.34
5
1
0.04
1
288.15
5
2
0.14335
5
1
999.36
5
1
0.04
1
288.15
5
2
0.27635
5
1
999.66
5
1
0.04
1
288.15
5
2
0.4159
5
1
1000.02
6
1
0.04
1
288.15
5
2
0.58821
5
1
1000.5
6
1
0.04
1
288.15
5
2
0.75921
5
1
1001.05
6
1
0.04
1
288.15
5
2
0.97864
5
1
1001.79
6
1
0.04
1
288.15
5
2
1.1038
5
1
1002.23
6
1
0.04
1
288.15
5
2
1.3398
5
1
1003.08
6
1
0.04
1
288.15
5
2
1.3481
5
1
1003.12
6
1
0.04
1
288.15
5
2
1.6776
5
1
1004.31
6
1
0.04
1
288.15
5
2
1.7449
5
1
1004.55
6
1
0.04
1
298.15
5
2
0
2
1
997.047
6
1
0.043
1
298.15
5
2
0.057643
5
1
997.1
5
1
0.04
1
298.15
5
2
0.088271
5
1
997.13
5
1
0.04
1
298.15
5
2
0.13094
5
1
997.18
5
1
0.04
1
298.15
5
2
0.14335
5
1
997.2
5
1
0.04
1
298.15
5
2
0.27635
5
1
997.38
5
1
0.04
1
298.15
5
2
0.4159
5
1
997.61
5
1
0.04
1
298.15
5
2
0.58821
5
1
997.94
5
1
0.04
1
298.15
5
2
0.75921
5
1
998.31
5
1
0.04
1
298.15
5
2
0.97864
5
1
998.84
5
1
0.04
1
298.15
5
2
1.1038
5
1
999.15
5
1
0.04
1
298.15
5
2
1.3398
5
1
999.77
5
1
0.04
1
298.15
5
2
1.3481
5
1
999.79
5
1
0.04
1
298.15
5
2
1.6776
5
1
1000.65
6
1
0.04
1
298.15
5
2
1.7449
5
1
1000.82
6
1
0.04
1
308.15
5
2
0
2
1
994.035
6
1
0.044
1
308.15
5
2
0.057643
5
1
994.05
5
1
0.04
1
308.15
5
2
0.088271
5
1
994.06
5
1
0.04
1
308.15
5
2
0.13094
5
1
994.08
5
1
0.04
1
308.15
5
2
0.14335
5
1
994.08
5
1
0.04
1
308.15
5
2
0.27635
5
1
994.17
5
1
0.04
1
308.15
5
2
0.4159
5
1
994.29
5
1
0.04
1
308.15
5
2
0.58821
5
1
994.48
5
1
0.04
1
308.15
5
2
0.75921
5
1
994.7
5
1
0.04
1
308.15
5
2
0.97864
5
1
995.04
5
1
0.04
1
308.15
5
2
1.1038
5
1
995.24
5
1
0.04
1
308.15
5
2
1.3398
5
1
995.64
5
1
0.04
1
308.15
5
2
1.3481
5
1
995.66
5
1
0.04
1
308.15
5
2
1.6776
5
1
996.23
5
1
0.04
1
308.15
5
2
1.7449
5
1
996.35
5
1
0.04
1
318.15
5
2
0
2
1
990.216
6
1
0.045
1
318.15
5
2
0.057643
5
1
990.19
5
1
0.05
1
318.15
5
2
0.088271
5
1
990.18
5
1
0.05
1
318.15
5
2
0.13094
5
1
990.17
5
1
0.05
1
318.15
5
2
0.14335
5
1
990.17
5
1
0.05
1
318.15
5
2
0.27635
5
1
990.17
5
1
0.05
1
318.15
5
2
0.4159
5
1
990.18
5
1
0.05
1
318.15
5
2
0.58821
5
1
990.24
5
1
0.05
1
318.15
5
2
0.75921
5
1
990.33
5
1
0.05
1
318.15
5
2
0.97864
5
1
990.47
5
1
0.05
1
318.15
5
2
1.1038
5
1
990.57
5
1
0.05
1
318.15
5
2
1.3398
5
1
990.79
5
1
0.05
1
318.15
5
2
1.3481
5
1
990.8
5
1
0.05
1
318.15
5
2
1.6776
5
1
991.13
5
1
0.05
1
318.15
5
2
1.7449
5
1
991.2
5
1
0.05
5
1
1
3
1
Principal objective of the work
GPC
TRC
3/10/2010
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
3
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Pressure, kPa
Liquid
101
3
1
Temperature, K
Liquid
2
Molality, mol/kg
1
Liquid
1
278.15
5
2
0
2
1
1105.49
6
1
0.07
1
278.15
5
2
0.051515
5
1
1105.05
6
1
0.07
1
278.15
5
2
0.084044
5
1
1104.78
6
1
0.07
1
278.15
5
2
0.11163
5
1
1104.56
6
1
0.07
1
278.15
5
2
0.15893
5
1
1104.19
6
1
0.07
1
278.15
5
2
0.22437
5
1
1103.7
6
1
0.07
1
278.15
5
2
0.25024
5
1
1103.51
6
1
0.07
1
278.15
5
2
0.33514
5
1
1102.93
6
1
0.07
1
278.15
5
2
0.45471
5
1
1102.18
6
1
0.07
1
278.15
5
2
0.57827
5
1
1101.46
6
1
0.07
1
278.15
5
2
0.59794
5
1
1101.37
6
1
0.07
1
278.15
5
2
0.85682
5
1
1100.11
6
1
0.07
1
278.15
5
2
1.1486
5
1
1098.97
6
1
0.07
1
278.15
5
2
1.4209
5
1
1098.09
6
1
0.07
1
278.15
5
2
1.7242
5
1
1097.25
6
1
0.07
1
288.15
5
2
0
2
1
1105.75
6
1
0.07
1
288.15
5
2
0.051515
5
1
1105.24
6
1
0.07
1
288.15
5
2
0.084044
5
1
1104.94
6
1
0.07
1
288.15
5
2
0.11163
5
1
1104.68
6
1
0.07
1
288.15
5
2
0.15893
5
1
1104.24
6
1
0.07
1
288.15
5
2
0.22437
5
1
1103.66
6
1
0.07
1
288.15
5
2
0.25024
5
1
1103.44
6
1
0.07
1
288.15
5
2
0.33514
5
1
1102.74
6
1
0.07
1
288.15
5
2
0.45471
5
1
1101.81
6
1
0.07
1
288.15
5
2
0.57827
5
1
1100.91
6
1
0.07
1
288.15
5
2
0.59794
5
1
1100.78
6
1
0.07
1
288.15
5
2
0.85682
5
1
1099.11
6
1
0.07
1
288.15
5
2
1.1486
5
1
1097.48
6
1
0.07
1
288.15
5
2
1.4209
5
1
1096.14
6
1
0.07
1
288.15
5
2
1.7242
5
1
1094.79
6
1
0.07
1
298.15
5
2
0
2
1
1104.35
6
1
0.07
1
298.15
5
2
0.051515
5
1
1103.79
6
1
0.07
1
298.15
5
2
0.084044
5
1
1103.44
6
1
0.07
1
298.15
5
2
0.11163
5
1
1103.15
6
1
0.07
1
298.15
5
2
0.15893
5
1
1102.67
6
1
0.07
1
298.15
5
2
0.22437
5
1
1102.01
6
1
0.07
1
298.15
5
2
0.25024
5
1
1101.76
6
1
0.07
1
298.15
5
2
0.33514
5
1
1100.96
6
1
0.07
1
298.15
5
2
0.45471
5
1
1099.88
6
1
0.07
1
298.15
5
2
0.57827
5
1
1098.83
6
1
0.07
1
298.15
5
2
0.59794
5
1
1098.67
6
1
0.07
1
298.15
5
2
0.85682
5
1
1096.68
6
1
0.07
1
298.15
5
2
1.1486
5
1
1094.67
6
1
0.07
1
298.15
5
2
1.4209
5
1
1092.97
6
1
0.07
1
298.15
5
2
1.7242
5
1
1091.23
6
1
0.07
1
308.15
5
2
0
2
1
1101.62
6
1
0.07
1
308.15
5
2
0.051515
5
1
1101.01
6
1
0.07
1
308.15
5
2
0.084044
5
1
1100.64
6
1
0.07
1
308.15
5
2
0.11163
5
1
1100.32
6
1
0.07
1
308.15
5
2
0.15893
5
1
1099.78
6
1
0.07
1
308.15
5
2
0.22437
5
1
1099.07
6
1
0.07
1
308.15
5
2
0.25024
5
1
1098.79
6
1
0.07
1
308.15
5
2
0.33514
5
1
1097.9
6
1
0.07
1
308.15
5
2
0.45471
5
1
1096.7
6
1
0.07
1
308.15
5
2
0.57827
5
1
1095.52
6
1
0.07
1
308.15
5
2
0.59794
5
1
1095.34
6
1
0.07
1
308.15
5
2
0.85682
5
1
1093.07
6
1
0.07
1
308.15
5
2
1.1486
5
1
1090.74
6
1
0.07
1
308.15
5
2
1.4209
5
1
1088.77
6
1
0.07
1
308.15
5
2
1.7242
5
1
1086.72
6
1
0.07
1
318.15
5
2
0
2
1
1097.82
6
1
0.07
1
318.15
5
2
0.051515
5
1
1097.17
6
1
0.07
1
318.15
5
2
0.084044
5
1
1096.77
6
1
0.07
1
318.15
5
2
0.11163
5
1
1096.43
6
1
0.07
1
318.15
5
2
0.15893
5
1
1095.85
6
1
0.07
1
318.15
5
2
0.22437
5
1
1095.08
6
1
0.07
1
318.15
5
2
0.25024
5
1
1094.78
6
1
0.07
1
318.15
5
2
0.33514
5
1
1093.81
6
1
0.07
1
318.15
5
2
0.45471
5
1
1092.5
6
1
0.07
1
318.15
5
2
0.57827
5
1
1091.2
6
1
0.07
1
318.15
5
2
0.59794
5
1
1091
6
1
0.07
1
318.15
5
2
0.85682
5
1
1088.48
6
1
0.07
1
318.15
5
2
1.1486
5
1
1085.87
6
1
0.07
1
318.15
5
2
1.4209
5
1
1083.64
6
1
0.07
1
318.15
5
2
1.7242
5
1
1081.33
6
1
0.07