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https://doi.org/10.1021/je020176b
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dc.title | Physicochemical properties and the crystallization thermodynamics of the pure enantiomer and the racemate for N-methylephedrine | |
dc.contributor.author | Wang, X.J. | |
dc.contributor.author | Wiehler, H. | |
dc.contributor.author | Ching, C.B. | |
dc.date.accessioned | 2014-10-09T09:58:40Z | |
dc.date.available | 2014-10-09T09:58:40Z | |
dc.date.issued | 2003-09 | |
dc.identifier.citation | Wang, X.J., Wiehler, H., Ching, C.B. (2003-09). Physicochemical properties and the crystallization thermodynamics of the pure enantiomer and the racemate for N-methylephedrine. Journal of Chemical and Engineering Data 48 (5) : 1092-1098. ScholarBank@NUS Repository. https://doi.org/10.1021/je020176b | |
dc.identifier.issn | 00219568 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/92237 | |
dc.description.abstract | The binary melting point phase diagram of (+)- and (-)-N-methylephedrine was determined. It was shown that (±)-N-methylephedrine is a racemic conglomerate. The enthalpies of fusion of (+)-N-methylephedrine and of (±)-N-methylephedrine and the entropy of mixing of (+)- and (-)-N-methylephedrine were calculated using the thermal data. The nature of the (±)-N-methylephedrine crystalline racemate was also confirmed by means of comparison of solid-state infrared spectra and powder X-ray diffraction patterns of the racemic mixture with those of one of the enantiomers. The solubility and supersolubility diagrams of (±)-N-methylephedrine in a mixed solvent of 2-propanol and water were determined over the temperature range (7 to 30)°C. The ternary phase diagram of (+)- and (-)-N-methylephedrine with the mixed solvent was constructed at (15, 20, 25, and 30)°C. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/je020176b | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | CHEMICAL & ENVIRONMENTAL ENGINEERING | |
dc.contributor.department | CHEMICAL AND PROCESS ENGINEERING CENTRE | |
dc.description.doi | 10.1021/je020176b | |
dc.description.sourcetitle | Journal of Chemical and Engineering Data | |
dc.description.volume | 48 | |
dc.description.issue | 5 | |
dc.description.page | 1092-1098 | |
dc.description.coden | JCEAA | |
dc.identifier.isiut | 000185341600003 | |
Appears in Collections: | Staff Publications |
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