A heat-sensitive record material as defined in claim 1, wherein a compound represented by the following formula (II) is contained in the recording layer; ##STR8## wherein R1, R2, R3, R4, R5 and R6 may be the same or different from each other, and each of them is a hydrogen atom, halogen atom, alkyl having C1 to C5 or alkoxyl having C1 to C5.