The
solubility of 2-mercapto-1,3,4-thiadiazol (MTD) in 13 pure
solvents including methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, s-butanol, n-pentanol, i-pentanol, acetonitrile, ethyl formate, methyl acetate,
and ethyl acetate was determined by a static gravimetric method at
temperatures ranging from 278.15 to 318.15 K under atmospheric pressure.
The results demonstrated that the experimental solubility of MTD increases
with the increase of temperature. The mole fraction solubility of
MTD in the solvent of methyl acetate was the highest and in acetonitrile
was the lowest. The experimental solubility data were correlated with
the Yaws model, the modified Apelblat model, the λh model, and the NRTL model. Relative average deviation (RAD) and
root mean square deviation (rmsd) were used to evaluate the fitting
degree of each model. The fitting results show that the NRTL model
fitted the solubility data best among all selected models (with RAD
= 0.0008, rmsd = 0.00005).
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