Bu RONALD A. HESRV AND GBL SMITH The dearrangement of nitroaminoguanidine in a solution of ammonium carbonate was shown previously'to yield hydrazine, guanidine, nitroguanidine, aminoguanidine and diaminoguanidine. The hydraxinolysis of nitroaminoguanidine also gives diaminoguanidine. The reaction of methylamine with nitroaminoguanidine in aqueous solution has now been studied and is analogous to ...