2,4-Dinitrophenylhydrazine is commercially available usually as a wet powder.
It can be prepared by the reaction of hydrazine sulfate with 2,4-dinitrochlorobenzene:
Brady's reagent is prepared by dissolving 2,4-dinitrophenylhydrazine in a solution containing methanol and some concentrated sulfuric acid.
The medium should be slightly acidic.
2,4-Dinitrophenylhydrazine is commercially available usually as a wet powder. It can be prepared by the reaction of hydrazine sulfate with 2,4-dinitrochlorobenzene:
Brady's reagent is prepared by dissolving 2,4-dinitrophenylhydrazine in a solution containing methanol and some concentrated sulfuric acid. The medium should be slightly acidic.
2,4-Dinitrophenylhydrazine