Investigations on oxidation products, previously obtained by the Authors (Rend. (VIII), XLII, 737 (1967)) from dithiocarbazic acids, have been extended. The probability of the two forms: I) Ar₂N₄C₂S₃H₂; II) Ar₂N₄C₂S₃H has been discussed, on the basis of the cleavage, also discovered by the Authors, of primary and secondary amines and arylhydrazines. These cleavages lead to sulfur and arylsemicarbazides, when starting from amines: a) Ar·HN·NH·CS·N·R'R" and to diarylthiocarbohidrazides, when starting from arylhydrazines: b) Ar'HN·NH·CS·NH·NH·Ar". Reported reactions are quite general for all derivatives of type a) or b), which have been prepared.