Nitromethane physical properties

The bulk physical properties of the polymers of the 2-cyanoacryhc esters appear in Table 2. AH of these polymers are soluble in /V-methy1pyrro1idinone, /V,/V-dimethy1foTm amide, and nitromethane. The adhesive bonding properties of typical formulated adhesives are Hsted in Table 3. 

The heat of decomposition (238.4 kJ/mol, 3.92 kJ/g) has been calculated to give an adiabatic product temperature of 2150°C accompanied by a 24-fold pressure increase in a closed vessel [9], Dining research into the Friedel-Crafts acylation reaction of aromatic compounds (components unspecified) in nitrobenzene as solvent, it was decided to use nitromethane in place of nitrobenzene because of the lower toxicity of the former. However, because of the lower boiling point of nitromethane (101°C, against 210°C for nitrobenzene), the reactions were run in an autoclave so that the same maximum reaction temperature of 155°C could be used, but at a maximum pressure of 10 bar. The reaction mixture was heated to 150°C and maintained there for 10 minutes, when a rapidly accelerating increase in temperature was noticed, and at 160°C the lid of the autoclave was blown off as decomposition accelerated to explosion [10], Impurities present in the commercial solvent are listed, and a recommended purification procedure is described [11]. The thermal decomposition of nitromethane under supercritical conditions has been studied [12], The effects of very high pressure and of temperature on the physical properties, chemical reactivity and thermal decomposition of nitromethane have been studied, and a mechanism for the bimolecular decomposition (to ammonium formate and water) identified [13], Solid nitromethane apparently has different susceptibility to detonation according to the orientation of the crystal, a theoretical model is advanced [14], Nitromethane actually finds employment as an explosive [15],... 

Nitromethane is the simplest and perhaps the most studied prototypical energetic material. It has been subjected to most of the applicable experimental techniques and its chemical and physical properties have been investigated for the solid, liquid, and gas phases. Significant progress in theoretically modeling of nitromethane in the various phases is being made. It appears that the initial steps in the chemical decomposition mechanisms are the same in the liquid and gas phases [83],... 

Low-carbon nitroalkanes have similar physical properties as nitromethane, but they are comparatively more difficult to detonate, exhibiting inferior detonation properties, therefore, they are mainly used in liquid explosive mixtures to lower the freezing point of nitromethane. Table 7.1 listed the physical properties of four low-carbon nitroalkanes including nitromethane (NM), nitroethane (NE), o-nitropro-pane, and nitropropane. 

Jover et al. (2007JQCS385) utihzed ANN to compose a multicomponent system to correlate pIQ of 94 phenols in protic (water, methanol, isopropanol, and tert-butanol) and aprotic (DMSO, N,N-dimethylformamide (DMF), AN, nitromethane, acetone, and N,N-dimethylacetamide (DMA)) solvents. The phenols were characterized hy CODESSA descriptors and the solvents hy several physical properties and the most used multiparametric polarity solvent scales. The final model contained seven descriptors—five of them belonging to the solutes and the remaining two to the solvents. RMSE and (R ) of 0.71 (0.982), 0.83 (0.977), and 0.95 (0.975) for the... 

The nitroalkanes are named as derivatives of the hydrocarbon with the prefix nitro. The primary or secondary position of the nitro group on propane is indicated by the number 1 or 2. The structure of nitromethane is CH3NO2, CH3CH2NO2 is nitroethane, CH3CH2CH2NO2 is 1-nitropropane, and CH3-CH(N02)CH3 is 2-nitropropane. The CA index names (Chemical Abstract Index, American Chemical Society) for each nitroalkane is listed in Table 17.1 along with the solvent s physical properties. The CAS numbers refer to the major nitroalkane component. Refer to the Material Safety Data Sheet (MSDS) for CAS numbers of any minor impurities in the solvent. 

Engl transln in Soviet Physics, Doklady 5, 337-40(1960) CA 55, 24013(1961) (Measurement of adiabatic shock waves in cast Trotyl, crystalline Hexogen and Nitromethane) 65) Dunkle s Syllabus (1960-1961) Shock Waves, which includes Mathematical Background (Sessions 1 2) Fluid Flow (Session 3) Initiation of Shock Waves (Session 4) Properties of Shock Waves (Session 5) Shock Relationships and Formulas (Session 6) Shock Wave Interactions (Sessions 7 8) 66) B.D. 

As a combustible with a rather high oxygen content nitromethane, alone or in various mixtures, has been gaining even increasing use as a rocket fuel. This great interest in nitromethane provided an incentive for the investigation of its physical Mid chemical properties. 

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