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Issue 10, 2008
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The crystallisation and stability of a polymorphic salt, ethylene diammonium dinitrobenzoate

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Abstract

The crystallisation of the polymorphic salt, ethylene diammonium dinitrobenzoate, is reported. In particular it is noted that in this monotropic system it is possible at certain temperature, pH and supersaturation conditions, for the stable form to crystallise directly rather than via the metastable triclinic polymorph. The underlying reason for this is sought via studies of transformation kinetics and speciation of the salt components. The ideas developed are extended to demonstrate, for the first time, the selection of additives for the control of selective polymorph crystallisation of a molecular salt.

Graphical abstract: The crystallisation and stability of a polymorphic salt, ethylene diammonium dinitrobenzoate

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Publication details

The article was received on 03 Mar 2008, accepted on 09 Apr 2008 and first published on 20 May 2008


Article type: Paper
DOI: 10.1039/B803583K
New J. Chem., 2008,32, 1686-1692

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    The crystallisation and stability of a polymorphic salt, ethylene diammonium dinitrobenzoate

    R. J. Davey and H. P. Jones, New J. Chem., 2008, 32, 1686
    DOI: 10.1039/B803583K

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