Synthesis of unsymmetrical dimethylhydrazine oxalate from rejected liquid rocket propellant

The rejected liquid propellant unsymmetrical dimethylhydrazine (UDMH) was converted to UDMH oxalate, which has commercial value. The UDMH oxalate structure and stability were investigated by the Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, differential scanning c...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2018-02, Vol.121 (2), p.22008
Main Authors: Mu, Xiaogang, Yang, Jingjing, Zhang, Youzhi
Format: Article
Language:English
Subjects:
Aqueous solutions
Calorimetry
Differential scanning calorimetry
Dimethylhydrazines
Fourier analysis
Fourier transforms
Infrared spectroscopy
Liquid propellants
Liquid rocket propellants
Magnetic resonance spectroscopy
Melting point
Melting points
NMR
NMR spectroscopy
Nuclear magnetic resonance
Oxalic acid
Rocket launches
Rocket propellants
Spectrophotometry
Spectrum analysis
Structural stability
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Summary:The rejected liquid propellant unsymmetrical dimethylhydrazine (UDMH) was converted to UDMH oxalate, which has commercial value. The UDMH oxalate structure and stability were investigated by the Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, differential scanning calorimetry, and ultraviolet-visible spectrophotometric analysis. The results indicate that UDMH oxalate has good thermal and aqueous solution stability, a melting point of 144 °C, an initial decomposition temperature of 180 °C, and a peak wavelength of UV in aqueous solution at λ = 204 nm. This disposal method of rejected UDMH is highly efficient and environmentally safe.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/121/2/022008