Na allyed graphite intercalation compounds wuth stage 1 and 2 were synthesized using the high temperature and pressure technique. Thermal stability and staging transitions of the compound were investigated depending on heating rates. The themal stability and temperature dependence of the deintercalation compouds werw chahacterized using differential scanning calorimeter analyzer. Enthalphy of formations were cinfirmed at tempreatures betwrrn 25 and 500\'C, depending on the various heating rates.