Tris(dimethylamido)gallium(III) dimer 1 has been previously used in ALD studies, however its thermal properties have not been reported as far as we know. Thermogravimetric analysis (TGA) showed 1 evaporated in a single step from 140-230 °C, with only 5% of residual mass (Figure ). The 1 torr vapour pressure of 1 was shown to occur at 109 ± 5 ºC its ∆H of vaporization was 59.5 kJ mol -1 (Figure ). Differential scanning calorimetry (DSC) showed an endothermic peak at 103 °C and a small broad exothermic event with a peak at 193 °C. The endothermic event peak corresponds to the melting point of 1 (103-106 °C), which matches our observed DSC value, whilst the exothermic event indicates high temperature decomposition.