A disazo compound having the general formula (1) ##STR1## (wherein X represents a substituted or unsubstituted aromatic ring or hetero ring, and Ar represents a substituted or unsubstituted aromatic ring or hetero ring);a method of making said disazo compound which comprises using, as a starting material, couplers having the general formula (2) ##STR2## and the general formula (4) ##STR3## (wherein X and Ar are the same as defined above); and a multilayer type electrophotographic element using said disazo compound as a charge transfer substance.