In this study, a series of binary mixtures of Adipic acid (AA) and Sebacic acid (SA) at various mass fractions were prepared. A binary mixture of AA and SA in the ratio of 48.0:52.0 wt% was shown to be an eutectic mixture with melting temperature of 116 degrees C, melting latent heat of 206.0 J g(-1). In order to improve thermal properties of AA-SA eutectic mixture, multilayer graphite nanoplates (GNP) at different mass fractions (0.1, 0.3, and 0.5 wt%) was loaded into AA-SA mixture. The loading of 0.5 wt% GNP decreased the extent of supercooling from 17.7 to 3.6 degrees C. GNP loading did not change the thermal stability, functional groups and crystallographic properties of AA-SA eutectic mixture. Thermal conductivity of AA-SA was improved by GNP loading. Besides, morphological properties of GNP loaded AA-SA were examined by scanning electron microscopy observations. Thermal reliability of the AA-SA eutectic mixtures was investigated at different thermal cycles. Eutectic mixture of AA-SA containing GNP of 0.1 and 0.5 wt% showed relatively smaller variations in melting temperature and freezing temperatures. (C) 2015 Elsevier B.V. All rights reserved.