Measurement, correlation of the solubility and solution thermodynamics of 2-cyanoguanidine in (methanol + water) binary solvent systems from T = (283.15 to 343.15) K
The solubility of 2-cyanoguanidine in binary solvent mixtures (water + methanol) were experimentally measured from T = (283.15 to 343.15) K by the static method. The mass fraction of methanol wt is 0.100, 0.200, 0.300, 0.400, 0.500, and 0.600. The experimental results show that values obtained increased with temperature increasing from (283.15 to 343.15) K. Good agreement was found between the experiments and calculations by the modified Apelblat equation, fifth-order polynomial equation and semi-empirical Buchowski Ksiazczak kh equation. Our experiment values were proven to give best agreement with the modified Apelblat equation. The dissolution enthalpy DdisH (24119.2 to 38593.9 J mol 1), the dissolution entropy DdisS (48.4083 to 90.7083 J mol 1 K 1) and the molar Gibbs free energy DdisG (7507.9 to 12909.8 J mol 1) were calculated on the basis of the modified Apelblat equation analysis. The solubility and dissolution properties of 2-cyanoguanidine in (water + - methanol) binary solvent mixtures obtained in this paper will provide essential support for 2-cyanoguanidine industrial design and further theoretical studies.
Compounds
#
Formula
Name
1
C2H4N4
N-cyanoguanidine
2
CH4O
methanol
3
H2O
water
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.