Hugoniot data are presented for the liquid forms of the substituted methanesmdash;dichloromethane, dibromomethane, dihyphen;iodomethane, and chloroformmdash;ethylene glycol, glycerol, and ammonia. High explosive techniques were used to cover the range of dynamic pressures of 0.7 to 82.0 GPa. Chloroform transforms to a new form at 25.0 GPa pressure. Dihyphen;iodomethane data indicate a low pressure transition at 2.3 GPa and a second transition at a pressure greater than 66.0 GPa. The shock velocityndash;particle velocity (Usndash;Up) data for these two liquids are best represented by a linear relationship over the various forms. TheUsndash;Updata for dichloromethane, dibromomethane, ethylene glycol, and glycerol are best fit by a quadratic expression inUp. AmmoniaUsndash;Updata fit a linear relationship. Only dibromonethane and ammoniaUsndash;Upcurves extrapolate to the known sound speed. The others intercept at values that are 13percnt; to 33percnt; higher than the measured sound speed, indicative of low pressure transitions.
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