[PAR] [TLE] Hydrazine [SEP] Hydrazine is an inorganic compound with the chemical formula N2H4 (also written H2NNH2 ), archaically called diamidogen.  A simple pnictogen hydride, it is a colorless flammable liquid with an ammonia-like odour.  Hydrazine is highly toxic and dangerously unstable unless handled in solution.  , approximately 120,000 tons of hydrazine hydrate (corresponding to a 64% solution of hydrazine in water by weight) were manufactured worldwide per year.  Hydrazine is mainly used as a foaming agent in preparing polymer foams, but significant applications also include its uses as a precursor to polymerization catalysts and pharmaceuticals. Additionally, hydrazine is used in various rocket fuels and to prepare the gas precursors used in air bags.  Hydrazine is used within both nuclear and conventional electrical power plant steam cycles as an oxygen scavenger to control concentrations of dissolved oxygen in an effort to reduce corrosion.  Anhydrous hydrazine is corrosive towards glass, in a manner similar to hydrofluoric acid. [PAR] [TLE] Viking (rocket engine) [SEP] The Viking rocket engines were members of a series of bipropellant engines for the first and second stages of the Ariane 1 through Ariane 4 commercial launch vehicles, using storable, hypergolic propellants, N2O4/UH 25 (mixture 75% UDMH and 25% Hydrazine.)
[PAR] [TLE] Hydrazine [ SEP ] Hydrazine is an inorganic compound with the chemical formula N2H4 ( also written H2NNH2 ) , archaically called diamidogen . A simple pnictogen hydride , it is a colorless flammable liquid with an ammonia - like odour . Hydrazine is highly toxic and dangerously unstable unless handled in solution . , approximately 120,000 tons of hydrazine hydrate ( corresponding to a 64 % solution of hydrazine in water by weight ) were manufactured worldwide per year . Hydrazine is mainly used as a foaming agent in preparing polymer foams , but significant applications also include its uses as a precursor to polymerization catalysts and pharmaceuticals . Additionally , hydrazine is used in various rocket fuels and to prepare the gas precursors used in air bags . Hydrazine is used within both nuclear and conventional electrical power plant steam cycles as an oxygen scavenger to control concentrations of dissolved oxygen in an effort to reduce corrosion . Anhydrous hydrazine is corrosive towards glass , in a manner similar to hydrofluoric acid . [PAR] [TLE] Viking ( rocket engine ) [ SEP ] The Viking rocket engines were members of a series of bipropellant engines for the first and second stages of the Ariane 1 through Ariane 4 commercial launch vehicles , using storable , hypergolic propellants , N2O4/UH 25 ( mixture 75 % UDMH and 25 % Hydrazine . )
Which chemical archaically called diamidogen was used in the Viking rocket engines?
Which chemical archaically called diamidogen was used in the Viking rocket engines ?
Hydrazine
Hydrazine