Mesures ultrasonores dans des liquides organiques : relation entre pression interne et température de fusion. Note II

The ultrasonic velocity and the density of the following organic compounds: o—C 6 H 4 Cl 2 ; o-C 6 H 4 ClBr, m—C 6 H 4 Cl 2 , CH 3 NO 2 and (C 2 H 5 ) 2 C 2 O 4 have been measured above the melting point and the internal pressure is derived. The relation between the internal pressure and the fusion temperature is pointed out for these substances and for others studied previously.