Diniconazole and hexaconazole are wide spectrum triazole fungicides with high-efficiency and low toxicity. The specific molar heat capacity (C-p,C-m) of diniconazole and hexaconazole were determined by a continuous C-p mode of micro-calorimeter and theoretical calculation, their C-p,C-m values at T = 298.15 K were 381.72 J K (1) mol (1) and 364.66 J K (1) mol (1), respectively. The C-p,C-m value of diniconazole is higher than that of hexaconazole at temperature from T = (283.15 to 353.15) K. (C) 2016 Elsevier Ltd. All rights reserved.