Journal of Molecular Liquids published new progress about 930-36-9. 930-36-9 belongs to pyrazoles-derivatives, auxiliary class Pyrazole, name is 1-Methylpyrazole, and the molecular formula is C7H11Br, Synthetic Route of 930-36-9.
Zhang, Tong-wei published the artcileMeasurement and correlation of solubility of 1-methyl-3,4,5-trinitropyrazole in twelve pure solvents at temperatures from 283.15 K to 323.15 K, Synthetic Route of 930-36-9, the publication is Journal of Molecular Liquids (2020), 113895, database is CAplus.
In the present study, the solubility of 1-methyl-3,4,5-trinitropyrazole (MTNP) was determined by a dynamic laser monitoring at T = (283.15, 288.15, 293.15, 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15) K in twelve pure solvents, including water, benzene (Ph), di-Me sulfate (DMS), methylbenzene (PhMe), THF (THF), methanol (MeOH), ethanol (EtOH), 1,2-dichloroethane (DCE), nitromethane (NM), acetonitrile (ACN), Et acetate (EA) and formic acid (FA), at atm. pressure (P = 0.1 MPa). In the temperature range from 283.15 K to 323.15 K, the mole fraction solubility values of MTNP in water, Ph, DMS, PhMe, THF, MeOH, EtOH, DCE, NM, ACN, EA and FA were 0.000008-0.000072, 0.003495-0.025271, 0.002153-0.037197, 0.001602-0.012304, 0.002103-0.074525, 0.000318-0.001625, 0.003752-0.048205, 0.017836-0.047105, 0.008408-0.016783, 0.003579-0.012367, 0.004460-0.022006 and 0.220917-0.443206. As revealed from the exptl. results, the solubility of MTNP in twelve pure solvents increased with the increase in the temperature The solubility behaviors of MTNP in investigated solvents were analyzed with the Hansen solubility parameter. The Kamlet-Taft parameters were calculated to delve into the solvent effect. Subsequently, the measured solubility data was correlated with five thermodn. models, i.e., the modified Apelblat equation, λh equation, NRTL model, Wilson model and Two-Suffix Margules model. Overall, the NRTL model provided the most satisfactory fitting results. As revealed from the results, the min. average values of relative mean deviation (104ARD) and root-mean square deviation (104RMSD) were determined with the NRTL model that achieved the values of 2.06 and 1.49. Furthermore, the dissolution thermodn. parameters, including mixing enthalpy (ΔmixH), mixing entropy (ΔmixS) and mixing Gibbs energy (ΔmixG) were calculated according to the Wilson model, and the relative contributions of enthalpy %ζH and entropy %ζS were also calculated It can be seen that the dissolution of MTNP in a given solvent is spontaneous and entropy driven.
Journal of Molecular Liquids published new progress about 930-36-9. 930-36-9 belongs to pyrazoles-derivatives, auxiliary class Pyrazole, name is 1-Methylpyrazole, and the molecular formula is C7H11Br, Synthetic Route of 930-36-9.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics