Studies on thermal decomposition mechanism of CL-20 by pyrolysis gas chromatography-mass spectrometry (Py-GC/MS).
The thermal decomposition study of CL-20 (hexanitrohexaazaisowurtzitane) using pyrolysis GC/MS was carried out mainly by electron impact (EI) mode. Chemical ionization (CI) mode was used for further confirmation of identified species. Mass spectrum of CL-20 decomposition products predominantly revealed fragments with m/z 81 and 96 corresponding to C(4)H(5)N(2)(+) and C(4)H(4)N(2)O(+) ions, respectively. The total ion chromatogram (TIC) of CL-20 pyrolysis shows peak within first 2 min due to the presence of low molecular weight gases. Peaks corresponding to several other products were also observed including the atmospheric gases. Cyanogen formation (C(2)N(2), m/z 52) observed to be enriched at the scan number 300-500. The low molecular mass range decomposition products formed by cleavage of C-N ring structure were found in majority. Additional structural information was sought by employing chemical ionization mode. The data generated during this study was instrumented in determining decomposition pathways of CL-20.
Naik
N H
NH
High Energy Materials Research Laboratory, Sutarwadi, Pune 411021, India.
Gore
G M
GM
Gandhe
B R
BR
Sikder
A K
AK
D001952:Bridged-Ring Compounds / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D002852:Chromatography, Ion Exchange; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D013058:Mass Spectrometry; D009574:Nitro Compounds / Q000737:chemistry*; D009602:Nitrosamines / Q000737:chemistry
D001952:Bridged-Ring Compounds; D009574:Nitro Compounds; D009602:Nitrosamines; C083639:hexanitrohexaazaisowurzitane; C026156:N,N'-dinitrosopiperazine