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A colorless, flammable, hygroscopic liquid that reacts with water and moisture to produce heat. The principal use of dimethylhydrazine is as the base in rocket fuel formulations, but it is also found in some photographic developing solutions.

Chemical structure


Synonyms and Related Terms

1,1-dimethylhydrazine; n,n-dimethylhydrazine


  • Toxic by ingestion, inhalation and skin absorption.
  • Suspected carcinogen.
  • Exposure may cause skin irritation, choking, nausea, convulsions and liver injury.
  • Highly flammable. Flash point = -15C. Vapors are explosive.
  • Decomposes to produce toxic gases.
  • Millipore Sigma: SDS

Physical and Chemical Properties

Soluble in water and ethanol.

Composition (CH3)2NNH2
CAS 57-14-7
Melting Point -58 C
Density 0.782 g/ml
Molecular Weight mol. wt. = 60.1
Boiling Point 63 C

Resources and Citations

  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 3297
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

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