In this work, an organic phase change material-Bishexadecyl maleate was prepared by direct esterification of maleic anhydride (MA) and hexadecanol (HD). Then, in order to improve the crystalline phase of bishexadecyl maleate (MAHD), the synthesized MAHD was recrystallized with ethanol to prepare ethanol-bishexadecyl maleate (MAHD(E)). Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and x-ray diffraction (XRD) were used to characterize the chemical and crystalline structures of MAHD and MAHD(E). Polarizing Light Microscopy (POM) for observation of phase transition behavior of MAHD/MAHD(E). Differential scanning calorimetry (DSC), Variable temperature Fourier transform infrared spectroscopy (VT-FTIR), and thermo gravimetric analysis (TG) characterize the thermal properties and thermal stability of MAHD/MAHD(E). The results display that MAHD/MAHD(E) have the same chemical structure, and no chemical change occurs within the phase transition temperature, but the crystallinity of MAHD(E) has increased. Compared with HD, the crystallization temperature and melting temperature of MAHD/MAHD(E) is significantly reduced, which effectively expands the application range of HD. POM was observed to have a melting-recrystallization-melting behavior during the heating of MAHD/MAHD(E). This behavior was shown in the DSC curve as an unusual endothermic-exothermic-endothermic curve. After 100 thermal cycles, both MAHD and MAHD(E) exhibit good cycling stability. TG exhibits that the thermal stability of MAHD/MAHD(E) has been dramatically improved compared to HD, it has high application potential in phase change and energy storage. Therefore, MAHD/MAHD(E) is expected to be a substrate for new phase change materials, while the CC in the molecular chain provides potential reactivity with significant potential applications in the field of phase change energy storage.