Thermophysical Properties of an Insensitive Munitions Compound, 2,4-Dinitroanisole

Abstract

Accurate values of thermophysical properties of toxic chemical compounds over a range of temperatures are essential for understanding their environmental distribution, biotransformation, and development of potential water treatment processes. In this study, the aqueous solubility (sw), octanol–water partition coefficient (Kow), and Henry's law constant (kH) were measured for an insensitive munitions compound, 2,4-dinitroanisole (DNAN), at the temperatures of (298.15, 308.15, and 318.15) K. The effect of ionic environment on solubility, using electrolytes such as NaCl and CaCl2, was also studied. The data on the thermophysical parameters were correlated using the standard van't Hoff equation. All three properties exhibited a linear relationship with reciprocal temperature. The enthalpy and entropy of phase transfer were derived from the experimental data.