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Characterization of the phase equilibrium of the system trinitrotoluene/carbon dioxide

: Teipel, U.; Gerber, P.; Krause, H.H.


Propellants, explosives, pyrotechnics 23 (1998), No.2, pp.82-85
ISSN: 0340-7462
ISSN: 0721-3115
ISSN: 1521-4087
Journal Article
Fraunhofer ICT ()

The phase equil. of the system trinitrotoluene (TNT)-CO2 was studied. The concn. of TNT in CO2 at phase equil. was detd. at 150-500 bar and TNT concns. .ltoreq.5.2 wt.%. The temp. was varied from TNT exhibits good soly. in compressed CO2. The equil. concn. of TNT dissolved in compressed CO2 increases linearly independent of the temp. up to a pressure of 240 bar. Above 240 bar, or at concns. >1.5 wt.%, the influence of the temp. on the phase equil. level can be detd. At high temps. the phase equil. concn. is up to two times larger at a given pressure. The results are important for designing the engineering operations required to process TNT in combination with supercrit. CO2 and for detg. the appropriate boundary conditions of such a process.