Answer: diamines

AnswerCrossword Clue
diaminescolorless, oily, fuming liquid, N2H4, that is a weak base in solution and forms a large number of salts resembling ammonium salts: used chiefly as a reducing agent and a jet-propulsion fuel
diaminescompound containing two amino groups
diaminesDIAMINE, a chemical compound, also DIAMIDE, DIAMIN