Hydrazine Hydrate Catalyzed by zinc, Raney Nickel or Pd-C is the best reducing agent for mono and dinitro- compounds:
NH2-NH2/Zn/MeOH, RT is very efficient in reducing aliphatic and aromatic mono and dinitro derivatives, whereas the other two reagents (Raney Nickel and Pd-C with NH2-NH2 are generally used of nitroaromatic compounds.