Measurement and Correlation of Solubilities of 5,5′-Dinitramino-3,3′-bi[1,2,4-triazolate] Carbohydrazide Salt (CBNT) in Various Pure Solvents and a Binary Mixture (Dimethyl Sulfoxide + Water) from 298.15 to 343.15 K

Abstract

The solubilities of an energetic material, 5,5′-dinitramino-3,3′-bi­[1,2,4-triazolate] carbohydrazide salt (CBNT), were measured in eleven pure solvents (deionized water, methanol, ethanol, ethylene glycol, isopropanol, ethyl acetate, 1,2-dichloroethane, acetone, N,N-dimethylformamide, N-methyl pyrrolidone, and dimethyl sulfoxide (DMSO)) and a binary solvent mixture of (DMSO + water) under atmospheric pressure using a gravimetric method. The solubility data in pure solvents were fitted using the modified Apelblat equation. The solubility data of CBNT in binary solvents were correlated by the modified Apelblat equation, the combined nearly ideal binary solvent Redlich–Kister (CNIBS/R-K) model and the Jouyban–Acree model. All the fitting processes gave satisfying values of the correlation coefficient (R 2) and the root-mean-square-deviation. The measurements and the correlation of CBNT solubility provide fundamental data for its practical application.

Measurement and Correlation of Solubilities of 3-Nitro-1,2,4-triazol-5-one (NTO) in 10 Pure Solvents and 3 Binary Solvents from 278.15 to 328.15 K

“…The Jouyban–Acree model, one of the versatile models, is adopted to correlate the solubility data of NTO on both temperature and solvent compositions in binary solvents. ,− The Jouyban–Acree model can be described by eq where J i is a model constant, T is the absolute temperature, and x 0 and x 1 are the molar fraction compositions of the solvent (NMP or ethanol or HNO 3 ) and water that remove the solute (NTO) in binary mixed solvents. When N = 2, on substituting the Apelblat equation to eq , eq can be transformed as follows …”

“…In this study, solubilities of NTO were measured in 10 pure solvents (deionized water, methanol, ethanol, isopropanol, n -butanol, formic acid, ethyl acetate, acetonitrile, toluene, n -hexane) and 3 binary solvents (ethanol + water, HNO 3 + water, N -methyl pyrrolidone (NMP) + water) at different temperatures using gravimetric methods. − To correlate the influences of temperature and solvent composition on the solubility of NTO, the Apelblat equation, the CNIBS/R-K model, and the Jouyban–Acree model were utilized.…”

Solubility Measurement and Correlation of Dihydroxylammonium 5,5’-Bistetrazole-1,1′-diolate (TKX-50) in Four Pure Solvents and Three Binary Solvents at Temperatures between 298.15 and 333.15 K

“…In this work, we present the solubility of TKX-50 in water, formic acid, acetic acid, and ethanol at temperatures ranging from 298.15 to 333.15 K, − meanwhile the solubility of TKX-50 in three binary solvents (formic acid, acetic acid, and ethanol mixed with various mole fractions of water, respectively) were experimentally studied by the equilibrium method at temperatures ranging from 298.15 to 333.15 K at atmospheric pressure. Furthermore, the van’t Hoff equation and the modified Apelblat equation were used to correlate the experimental data in pure solvents, respectively; and the (CNIBS/R-K) equation, the Apelblat–Jouyban–Acree model, and the van’t Hoff–Jouyban–Acree model were used to correlate the experimental data in binary solvents, respectively.…”

Phase Equilibrium and Thermodynamics Studies on Dissolving Processes of Energetic Compounds: A Brief Review

“…As a kind of newly synthesized energetic compound with high density, excellent thermal stability, low mechanical sensitivity, and excellent detonation properties, 126 the solubility of 5,5′-dinitramino-3,3′-bi [1,2,4-triazolate] carbohydrazide salt (CBNT, C 5 H 10 N 14 O 5 ) in 11 pure solvents and a binary solvent has been measured, 127 and the experimental data were correlated by different models, which is shown in Figure 9a,b. Considering the much higher solubility of CBNT in DMSO than other solvents listed, an effective solvent/ antisolvent method could be taken to perform the recrystallization process.…”