The latter reacts further with hydrazine to yield the hydrazone::2 (CH3)2CO + N2H4 → 2 H2O + [(CH3)2C=N]2:[(CH3)2C=N]2 + N2H4 → 2 (CH3)2C=NNH2The propanone azine is an intermediate in the Atofina-PCUK process.
Nekatere spojine, med katere spadata azodikarbonamid in izobutironitril, dajejo 100-200 mL plina na gram prekurzorja.