Solubility Measurement and Correlation of 1,5-Dichloro-2,4-Dinitrobenzene in 15 Pure Solvents at Temperatures from 298.15 to 333.15 K

Abstract

This study reports the solubility of 1,5-dichloro-2,4-dinitrobenzene (DCDNB) in 15 pure solvents [methanol, ethanol, i-propanol, n-butanol, methylbenzene, methylene chloride, trichloromethane, tetrachloromethane, ethylene dichloride, acetone, ethyl ethanoate, ethanenitrile, N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO)] determined by the laser dynamic method at a temperature ranging from 298.15 to 333.15 K at 0.1 MPa. The solubility of DCDNB in all selected solvents showed an increasing trend with increasing temperature. In addition, the descending order of DCDNB solubility at 298.15 K is NMP > DMF > acetone > methylbenzene > DMSO > ethyl ethanoate > methylene chloride > ethylene dichloride > ethanenitrile > trichloromethane > tetrachloromethane > methanol > ethanol > n-butanol > i-propanol. The solvent effect was studied by the KAT-LSER model, which showed that the Hildebrand solubility parameter of solvents had a great effect on the solubility of DCDNB. Four models were used to correlate the experimental solubility data, including the modified Apelblat model, van't Hoff model, λh model, and NRTL model, which showed that the modified Apelblat model gave the best correlation, and the largest relative average deviation and root-mean-square deviation were no more than 3.54 × 10 −2 and 2.97 × 10 −3 , respectively.

Measurement and Correlation of Solubilities of γ-2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (γ-CL-20) in Six Pure Solvents and Four Different Chloralkane + Ethyl Acetate Binary Solvents from 283.15 to 323.15 K

“…The solubility was determined using the laser dynamic method. − The schematic diagram of the solubility measurement equipment is shown in Figure . First, we open the laser emission device and the thermostat (standard uncertainty of 0.05 K) that controls the temperature of the system and set it to the test temperature.…”