title: Studies on thermal decomposition mechanism of CL-20 by pyrolysis gas chromatography-mass spectrometry (Py-GC/MS).
abstract: 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.
authors.affiliation: High Energy Materials Research Laboratory, Sutarwadi, Pune 411021, India.
authors.forename: N H
authors.initials: NH
authors.lastname: Naik
authors.forename: G M
authors.initials: GM
authors.lastname: Gore
authors.forename: B R
authors.initials: BR
authors.lastname: Gandhe
authors.forename: A K
authors.initials: AK
authors.lastname: Sikder
mesh_terms: 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
chemical_list: D001952:Bridged-Ring Compounds; D009574:Nitro Compounds; D009602:Nitrosamines; C083639:hexanitrohexaazaisowurzitane; C026156:N,N'-dinitrosopiperazine