16139-18-7Relevant articles and documents
Green Energetic Nitrogen-Rich Salts of 1,1′-Dinitramino-5,5′-bistetrazolate
He, Piao,Wu, Le,Wu, Jinting,Wang, Qianyou,Li, Zhimin,Gozin, Michael,Zhang, Jianguo
, p. 11159 - 11168 (2017)
A series of nitrogen-rich energetic salts of 1,1′-dinitramino-5,5′-bistetrazolate (DNABT) guanidinium (1), aminoguanidinium (2), diaminoguanidinium (3), triaminoguanidinium (4), diaminouronium (5), 3,4-diamino-1,2,4-triazolium (6), and ethylenediammonium (7) was synthesized by a metathesis strategy and characterized by elemental analysis, mass spectrometry, and IR spectroscopy as well as single-crystal X-ray diffraction and differential scanning calorimetry (DSC). The natural bond orbitals (NBOs) and electrostatic potentials (ESPs) were further computed for a better understanding of the structures of the DNABT molecule. The heats of formation were calculated based on the Born–Haber energy cycle. The detonation parameters were evaluated by using the EXPLO5 program, and the sensitivities were measured according to BAM standers. These new salts exhibit highly positive heats of formation (407.0–1377.9 kJ mol?1) and good thermal stabilities (180–211 °C). Most of these compounds possess detonation velocities comparable to RDX and acceptable detonation pressures. The high volumes of explosion gases of the salts 3 and 4 (921 and 933 L kg?1, respectively) further support their power as explosives. The enhancing performances, the fact of being free of metals, and the more moderate sensitivities than K2DNABT, suggest that the salts 4 (D=8851 m s?1, P=29.0 GPa), 5 (D=9053 m s?1, P=32.3 GPa), and 6 (D=8835 m s?1, P=30.2 GPa) might be potential environmentally friendly energetic materials.
Thermodynamic and kinetic aspects of the reaction of aminoguanidine with malonic acid in acidic aqueous solutions
Chernysheva,Chernyshev,Korolenko,Taranushich
, p. 1813 - 1817 (2008)
Thermodynamic and kinetic features of the reaction of aminoguanidine with malonic acid in aqueous solutions at pH 0.5-1.3 to give mono-and diguanylhydrazides of malonic acid were examined, and the reaction mechanism was suggested.
PROCESS FOR STRAIGHTENING KERATIN FIBRES WITH A HEATING MEANS AND DENATURING AGENTS
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, (2010/03/02)
The invention relates to a process for straightening keratin fibres, comprising: (i) a step in which a straightening composition containing at least two denaturing agents is applied to the keratin fibres, (ii) a step in which the temperature of the keratin fibres is raised, using a heating means, to a temperature of between 110 and 250° C.
