Thermodynamic Study of Some Neopentane Derivated by Thermobarometric Analysis

Abstract

Abstract By using a metabolemeter, the phase behaviour under pressure of five plastic crystals derivated from Neopentane have been studied. The analysed compounds have been: 2,2-dimethyl, 1,3 propanediol (NPG), 2-hydroxymethyl-2 methyl, 1,3 propanediol (PG), 2-amino, 2-methyl, 1,3 propanediol (AMP), tris(hydroxymethyl-aminomethane (TRIS) and 2-methyl, 2-nitro, 1-propanol (MNP). The pressure-temperature phase diagrams have been established. The molar volume changes for both solid to plastic and plastic to liquid first order phase transitions have been determined.