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Gas Antisolvent Recrystallization: New Process To Recrystallize Compounds Insoluble in Supercritical Fluids
Abstract
The recrystallization of nitroguanidine from N-methyl pyrrolidone and N,N-dimethyl formamide using supercritical fluids and gases near their vapor pressures as anti-solvents was investigated. The nitroguanidine used for the recrystallization study consisted of high aspect ratio needles, 5 x 100 microns; because of its low bulk density the as-produced nitroguanidine is not satisfactorily incorporated into explosives formulations at high solids loading. Depending upon the specific combinations of parameters, the particle size and size distribution could be varied over a wide range, e.g., spherical particles of 100 microns diameter (the desired shape and size), low aspect ratio crystals, unusual star-shaped clusters, loose spherical agglomerates, or monodisperse particles of one micron or less. The results presented for nitroguanidine define a quite general recrystallization concept for processing difficult-to-comminute solids.
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Cited by
High-Pressure Phase Behavior of Carbon Dioxide with Imidazolium-Based Ionic Liquids
Aki, S. N. V. K., Mellein, B. R., Saurer, E. M., & Brennecke, J. F. (2004) · The Journal of Physical Chemistry B · doi:10.1021/jp046895+ · Cited by 872
Rantakylä, M., Jäntti, M., Aaltonen, O., & Hurme, M. (2002) · The Journal of Supercritical Fluids · doi:10.1016/s0896-8446(02)00034-7 · Cited by 120
Stabilization of proteins in dry powder formulations using supercritical fluid technology
Jovanović, N., Bouchard, A., Hofland, G. W., Witkamp, G.-J., Crommelin, D. J. A., & Jiskoot, W. (2004) · Pharmaceutical Research · doi:10.1023/b:pham.0000048185.09483.e7 · Cited by 111
Metadata
- Authors
- Gallagher, P. M., Coffey, M. P., Krukonis, V. J., & Klasutis, N.
- Venue
- ACS Symposium Series
- Publisher
- American Chemical Society
- Published
- 1989-08-29
- Pages
- 334-354
- ISSN
- 0097-6156 (ISSN-L)
- 1947-5918
- OpenAlex
- W2496718691
- Cited by
- 231
- References
- 0
- FWCI
- 8.89
- Type
- conference paper
- Language
- en
- Open access
- closed
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- Gallagher, P. M., Coffey, M. P., Krukonis, V. J., & Klasutis, N. (1989). Gas Antisolvent Recrystallization: New Process To Recrystallize Compounds Insoluble in Supercritical Fluids. ACS Symposium Series. https://doi.org/10.1021/bk-1989-0406.ch022
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