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Hydrazine
Hydrazine marketed for rocket propellant contains a minimum of 97 per cent N2H4, the other constituent being primarily water. Hydrazine is a clear, water-white, hygroscopic liquid. The solid is white. Hydrazine a toxic, flammable caustic liquid and a strong reducing agent. Its odor is similar that of ammonia, though less strong. It is slightly soluble in ammonia and methyl-amine. It is soluble in water, methanol, ethanol, UDMH, and ethylenediamine. Hydrazine is manufactured by the Raschig process, which involves the oxidation of ammonia to chloramine, either indirectly with aqueous sodium hypochlorite or directly with chlorine, and subsequent reaction of chloramine with excess ammonia. Raw materials include caustic, ammonia, and chlorine; these are high-tonnage, heavy chemicals. The cost of anhydrous hydrazine in drum quantities in 1959 was $ 7.00 per kg. The projected price, based on large-scale commercial production, was expected to be $ 1.00 per kg. Due to environmental regulations, by 1990 NASA was paying $ 17.00 per kg.
Density: 1.008 g/cc. Freezing Point: 2 deg C. Boiling Point: 113 deg C.
Engines: DOK-10, DOK-50, DOT-25, DOT-5, MR-120, MR-510, MR-111, MR-502, MR-512, MRM-122, MR-103, MRM-103, MR-104, MR-106, MRM-106, MR-107, MR-508, MR-509, MR-501B, MRE-15/OMV, MR-50, REA 10, REA 17-12, REA 22-2, REA 39-2, REA 20-4, REA 22-5, REA 16, REA 17-6, REA 22-16, REA 22-17, RM-01. Spacecraft: Shenzhou RV, Shenzhou OM, New Horizons, Themis. Stages: Pegasus-4, LK-4, OAM, RSA-4-4.
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