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1,1-Dimethylhydrazine

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Identification
Molecular formula
C2H8N2
CAS number
57-14-7
IUPAC name
1,1-dimethylhydrazine
State
State

1,1-Dimethylhydrazine is typically in a liquid state at room temperature.

Melting point (Celsius)
-58.00
Melting point (Kelvin)
215.15
Boiling point (Celsius)
63.00
Boiling point (Kelvin)
336.15
General information
Molecular weight
60.10g/mol
Molar mass
60.1020g/mol
Density
0.7930g/cm3
Appearence

1,1-Dimethylhydrazine is a colorless liquid at room temperature. However, upon exposure to air and light, it may turn a light yellow color due to impurities. It has a sharp, ammonia-like odor.

Comment on solubility

Solubility of 1,1-Dimethylhydrazine

1,1-Dimethylhydrazine (C2H8N2) is a fascinating compound when it comes to its solubility characteristics. Its solubility can be described as follows:

  • Solvent Compatibility: 1,1-Dimethylhydrazine is known to be highly soluble in polar organic solvents such as ethanol and acetone.
  • Aqueous Solubility: It has limited solubility in water, primarily due to its hydrophobic properties imparted by the two methyl groups (–CH3).
  • Effect of Temperature: As with many compounds, an increase in temperature can enhance solubility, particularly in organic solvents.
  • Hydrogen Bonding: While 1,1-dimethylhydrazine can participate in hydrogen bonding, its effectiveness is reduced due to steric hindrance from the methyl groups, impacting its overall solubility in water.

To summarize, 1,1-dimethylhydrazine showcases high solubility in polar organic solvents and limited solubility in water, making solvent selection crucial in applications where this compound is used.

Interesting facts

1,1-Dimethylhydrazine: An Insight into a Unique Compound

1,1-Dimethylhydrazine, commonly abbreviated as UDMH, is an intriguing compound with various applications and notable properties. As a hydrazine derivative, it has been the subject of extensive study, particularly in the field of rocket propulsion. Here are some interesting facts about this compound:

  • Rocket Fuel: UDMH is well-known for its use as a hypergolic propellant in some spacecraft, igniting spontaneously upon contact with oxidizers like nitrogen tetroxide. This property allows for efficient engine starts without the need for an igniter.
  • Historical Significance: The compound gained prominence during the 1960s as it was utilized in the U.S. Air Force's rocket programs, including the Titan and Atlas launch vehicles.
  • Toxicity: While effective, UDMH is also highly toxic and poses potential health risks upon exposure. It can have adverse effects if inhaled or absorbed through the skin, making proper handling and safety protocols critical in laboratory and industrial environments.
  • Chemical Behavior: UDMH exhibits unique reactivity due to its amino groups, which can actively participate in various organic reactions, making it a valuable intermediate in synthetic chemistry.
  • Storage Considerations: Because it's sensitive to heat and light, UDMH requires careful storage conditions to maintain its stability and prevent decomposition.

As a compound that balances utility in propulsion with significant safety considerations, 1,1-dimethylhydrazine continues to be a vital area of study within aerospace and chemical research. Its complex nature invites further exploration into safer alternatives while harnessing its beneficial properties!

Synonyms
1,1-DIMETHYLHYDRAZINE
57-14-7
N,N-Dimethylhydrazine
Dimazine
gem-Dimethylhydrazine
1,1-Dimethylhydrazin
Unsymmetrical dimethylhydrazine
Unsym-dimethylhydrazine
u-Dimethylhydrazine
1,1-Dimethyl hydrazine
Dimazin
uns-Dimethylhydrazine
UDMH
Hydrazine, N,N-dimethyl-
Hydrazine, 1,1-dimethyl-
as-Dimethylhydrazine
as-Dimethyl hydrazine
asymmetric Dimethylhydrazine
RCRA waste number U098
unsymmetrical-Dimethylhydrazine
Dimethylhydrazine, unsym.
asymmetric-Dimethylhydrazine
N,N-Dimetilidrazina
CCRIS 258
Dimethylhydrazine unsymmetrical
NSC 60517
HSDB 528
N,N-Dimetilidrazina [Italian]
1,1-Dimethylhydrazin [German]
DTXSID1020516
Niesymetryczna dwu metylohydrazyna
EINECS 200-316-0
BRN 0605261
4WPQ90N53J
Dimethylhydrazine, unsymmetrical
1.1-Dimethylhydrazine
Niesymetryczna dwu metylohydrazyna [Polish]
NSC-60517
DTXCID50516
(CH3)2NNH2
CHEBI:18853
EC 200-316-0
NSC60517
1,1-DIMETHYLHYDRAZINE [MI]
1,1-DIMETHYLHYDRAZINE [HSDB]
1,1-DIMETHYLHYDRAZINE [IARC]
N,N-dimetilidrazina (Italian)
1,1-dimethyhydrazine
1,1-DIMETHYLHYDRAZINE (IARC)
1,1-DIMETHYLHYDRAZIN (GERMAN)
DIMETHYLHYDRAZINE, (UNSYMMETRICAL)
DIMETHYLHYDRAZINE, [UNSYMMETRICAL]
C2H8N2
NIESYMETRYCZNA DWU METYLOHYDRAZYNA (POLISH)
UN1163
Dimethyl hydrazine (DMH)
RCRA waste no. U098
UNII-4WPQ90N53J
Hydrazine, dimethyl
1,1-dimethyldiazane
Dimethylhydrazine, as
asym-Dimethylhydrazine
Hydrazine,N-dimethyl-
Hydrazine,1-dimethyl-
N,N-dimethyl hydrazine
N,N-Dimethyl-hydrazine
1,1-dimethyl-hydrazine
Me2NNH2
N',N'-dimethylhydrazine
ASYM DIMETHYLHYDRAZINE
unsymmetrical-dimethylhyrazine
N,N-Dimethylhydrazine, 98%
WLN: ZN1&1
DTXSID70193615
HYDRAZINE, 1,1-DIMETHYL
Tox21_302358
MFCD00007628
1,1-Dimethylhydrazine (ACGIH:OSHA)
AKOS000119664
UN 1163
CAS-57-14-7
USEPA/OPP Pesticide Code: 600018
NCGC00255194-01
D0740
NS00008277
C19233
A831327
InChI=1/C2H8N2/c1-4(2)3/h3H2,1-2H
Q161296
Dimethylhydrazine, unsymmetrical [UN1163] [Poison]
200-316-0