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- Monomethylhydrazine abstract "Monomethylhydrazine (MMH) is a volatile hydrazine chemical with the chemical formula CH3 (NH)NH2. It is used as a rocket propellant in bipropellant rocket engines because it is hypergolic with various oxidizers such as nitrogen tetroxide (N2O4) and nitric acid (HNO3). As a propellant, it is described in specification MIL-PRF-27404.MMH is a hydrazine derivative used in the orbital maneuvering system (OMS) and reaction control system (RCS) engines of NASA's Space Shuttle, which used MMH and MON-3 (a mixture of nitrogen tetroxide with approximately 3% nitric oxide). This chemical is toxic and carcinogenic in small amounts, but it is easily stored in outer space providing moderate performance for very low fuel tank system weight. Recently the European Space Agency (ESA) has attempted to seek new options in terms of bipropellant rocket combinations to avoid poisonous chemicals such as this and its relatives.MMH and its chemical relative unsymmetrical dimethylhydrazine (UDMH) have a key advantage that they are stable enough to be used in regeneratively cooled rocket engines. The Apollo Lunar Modules used a one-to-one mixture of hydrazine and UDMH (called Aerozine 50, or A-50) as one part of the rocket fuel for lunar landings and takeoff: the rocket motors formed a hypergolic mixture of the hydrazines with liquid dinitrogen tetroxide as the usual oxidizer. (Otherwise, red fuming nitric acid works.) About three tons of mixed hydrazines and four and one half tons of the oxidizer were required for each landing, and about one-third of those amounts for the lunar take-off to orbit.Monomethylhydrazine is believed to be the main cause of the toxicity of Gyromitra genus mushrooms, especially the false morel (Gyromitra esculenta). In these cases, MMH is formed by the hydrolysis of gyromitrin.Monomethylhydrazine is considered to be a possible occupational carcinogen, and the occupational exposure limits to MMH are set at protective levels to account for the possible carcinogenicity.".
- Monomethylhydrazine iupacName "Methylhydrazine".
- Monomethylhydrazine thumbnail Monomethylhydrazine.png?width=300.
- Monomethylhydrazine wikiPageExternalLink eics0180.htm.
- Monomethylhydrazine wikiPageID "269794".
- Monomethylhydrazine wikiPageRevisionID "586381041".
- Monomethylhydrazine hasPhotoCollection Monomethylhydrazine.
- Monomethylhydrazine imagefile "Methylhydrazine-3D-balls.png".
- Monomethylhydrazine imagefile "Monomethylhydrazine.png".
- Monomethylhydrazine imagename "Ball and stick model of monomethylhydrazine".
- Monomethylhydrazine imagename "Skeletal formula of monomethylhydrazine with some implicit hydrogens shown".
- Monomethylhydrazine imagesize "100".
- Monomethylhydrazine iupacname "Methylhydrazine".
- Monomethylhydrazine verifiedrevid "412518770".
- Monomethylhydrazine watchedfields "changed".
- Monomethylhydrazine subject Category:Hydrazines.
- Monomethylhydrazine subject Category:Monoamine_oxidase_inhibitors.
- Monomethylhydrazine subject Category:Mycotoxins.
- Monomethylhydrazine subject Category:Rocket_fuels.
- Monomethylhydrazine type Agent114778436.
- Monomethylhydrazine type Antidepressant102718811.
- Monomethylhydrazine type CausalAgent100007347.
- Monomethylhydrazine type ChemicalAgent114779550.
- Monomethylhydrazine type Drug103247620.
- Monomethylhydrazine type Hydrazine114910581.
- Monomethylhydrazine type Hydrazines.
- Monomethylhydrazine type Matter100020827.
- Monomethylhydrazine type Medicine103740161.
- Monomethylhydrazine type MonoamineOxidaseInhibitor103783017.
- Monomethylhydrazine type MonoamineOxidaseInhibitors.
- Monomethylhydrazine type Mycotoxin115036536.
- Monomethylhydrazine type Mycotoxins.
- Monomethylhydrazine type PhysicalEntity100001930.
- Monomethylhydrazine type PlantToxin115036638.
- Monomethylhydrazine type Poison115032376.
- Monomethylhydrazine type ReducingAgent114780267.
- Monomethylhydrazine type Substance100020090.
- Monomethylhydrazine type Toxin115034074.
- Monomethylhydrazine type ChemicalCompound.
- Monomethylhydrazine type ChemicalSubstance.
- Monomethylhydrazine type ChemicalSubstanceType.
- Monomethylhydrazine type ChemicalObject.
- Monomethylhydrazine type Thing.
- Monomethylhydrazine comment "Monomethylhydrazine (MMH) is a volatile hydrazine chemical with the chemical formula CH3 (NH)NH2. It is used as a rocket propellant in bipropellant rocket engines because it is hypergolic with various oxidizers such as nitrogen tetroxide (N2O4) and nitric acid (HNO3).".
- Monomethylhydrazine label "Methylhydrazin".
- Monomethylhydrazine label "Methylhydrazine".
- Monomethylhydrazine label "Metil-hidrazina".
- Monomethylhydrazine label "Metilhidrazina".
- Monomethylhydrazine label "Monomethylhydrazine".
- Monomethylhydrazine label "Monometylohydrazyna".
- Monomethylhydrazine label "Méthylhydrazine".
- Monomethylhydrazine label "Метилгидразин".
- Monomethylhydrazine label "モノメチルヒドラジン".
- Monomethylhydrazine sameAs Monomethylhydrazin.
- Monomethylhydrazine sameAs Methylhydrazin.
- Monomethylhydrazine sameAs Metilhidrazina.
- Monomethylhydrazine sameAs Méthylhydrazine.
- Monomethylhydrazine sameAs Monomethylhydrazine.
- Monomethylhydrazine sameAs モノメチルヒドラジン.
- Monomethylhydrazine sameAs Methylhydrazine.
- Monomethylhydrazine sameAs Monometylohydrazyna.
- Monomethylhydrazine sameAs Metil-hidrazina.
- Monomethylhydrazine sameAs m.01nrt1.
- Monomethylhydrazine sameAs Q417347.
- Monomethylhydrazine sameAs Q417347.
- Monomethylhydrazine sameAs Monomethylhydrazine.
- Monomethylhydrazine wasDerivedFrom Monomethylhydrazine?oldid=586381041.
- Monomethylhydrazine depiction Monomethylhydrazine.png.
- Monomethylhydrazine isPrimaryTopicOf Monomethylhydrazine.