(760b) Physical Properties of Munitions Compounds -- Chinalake-20 (CL-20), Diamino-Dinitroethylene (DADE), Cyclotetramethylenetetranitramine (HMX), and Cyclotrimethylenetrinitramine (RDX)

Physicochemical properties of chemical compounds over a series of temperatures are very essential for understanding their environmental fate and distribution, biotransformation, and for  developing potential wastewater treatment processes. In this study, aqueous solubility (S_w) and octanol-water partition coefficient (K_ow) were measured for four insensitive munitions compounds, Chinalake-20 (CL-20), Diamino-Dinitroethylene (DADE), Cyclotetramethylenetetranitramine (HMX), and Cyclotrimethylenetrinitramine (RDX) from 288K to 313K. Differential Scanning Calorimetry (DSC) was used to obtain melting and boiling points. The DSC data were correlated using the standard Van’t Hoff equation in order to determine the influence of temperature on the solubility of the munitions compounds. The enthalpy and entropy of phase transfer were also derived from the experimental data. The experimental results obtained were compared with available literature values and predicted values using EPI suite and the SPARC models.  Details of the experimental results for the four munitions compounds and model predictions will be presented.