Apparent Molar Volumes and Expansibilities of Thiourea, 1,3-Dimethylurea, and 1,3-Dimethylthiourea in Water at Temperatures from T = (278.15 to 318.15) K and Atmospheric Pressure
Ivanov, E. V.[Evgeniy V.], Abrosimov, V. K.[Vladimir K.]
Densities of dilute aqueous solutions of thiourea, 1,3-dimethylurea, and 1,3-dimethylthiourea were obtained using the Anton Paar DMA 5000 M vibrating-tube densimeter. The apparent molar volumes and expansibilities (down to infinite dilution) were computed from the measured density data. The experiments were performed at five temperatures from (278.15 to 318.15) K and atmospheric pressure. A comparison of volumetric and some other thermodynamic changes caused by the N,N?-methylation in thiourea and urea molecules are discussed.
Compounds
#
Formula
Name
1
C3H8N2O
1,3-dimethylurea
2
C3H8N2S
N,N'-dimethylthiourea
3
CH4N2S
thiourea
4
H2O
water
5
CH4N2O
urea
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.