Density, speeds of sound and refractive index has been measured of DEC with aromatic hydrocarbons between 298.15 and 323.15 K.
and 93d203e5f669c969d8eac44f6700a">
are negative in the whole composition range may be attributed to strong ion–ion/dipole-dipole interaction.
The effect of temperature and concentration on density, speed of sound and refractive index have been discussed.