Publication Date:
2019-08-13
Description:
Laboratory samples of uns-dimethylhydrazine (UDMH) fuel/oxidizer (nitrogen dioxide) non-combustion reaction products (UFORP) were prepared using a unique permeation tube technology. Also, a synthetic UFORP was prepared from UDMH, N-nitrosodimethylamine (NDMA), dimethylammonium nitrate, sodium nitrite and purified water. The evaporation rate of UFORP and synthetic UFORP was determined under space vacuum (approx 10(exp -3) Torr) at -40 ?C and 0 ?C. The material remaining was analyzed and showed that the UFORP weight and NDMA concentration decreased over time; however, NDMA had not completely evaporated. Over 85% of the weight was removed by subjecting the UFORP to 10(-3) Torr for 7 hours at -40 ?C and 4 hours at 0 ?C. A mixture of dimethylammonium nitrate and sodium nitrite formed NDMA at a rapid rate in a moist air environment. A sample of UFORP residue was analyzed for formation of NDMA under various conditions. It was found that NDMA was not formed unless nitrite was added.
Keywords:
Inorganic, Organic and Physical Chemistry
Type:
JSC-CN-2366
,
20th JANNAF Safety and Environmental Protections Subcommittee (S and EPS) Joint Meeting; Mar 24, 2003 - Mar 27, 2003; Charlottesville, VA; United States|31st JANNAF Propellant Development and Characterization Subcommittee (PDCS) Joint Meeting; Mar 24, 2003 - Mar 27, 2003; Charlottesville, VA; United States
Format:
application/pdf
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