Nucleation control in solution mediated polymorphic phase transformations: The case of 2,6-dihydroxybenzoic acid

R. J. Davey, N. Blagden, S. Righini, H. Alison, E. S. Ferrari

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This contribution describes the kinetics of the solution mediated phase transformation between forms 1 and 2 of dihydroxybenzoic acid. It is shown how a combination of kinetic, morphological, and modeling data can be used to give a full description of the rate-determining process in such a transformation. Surprisingly, secondary nucleation is found to dominate the kinetic processes. Such a phenomenon is well-known in continuous crystallization but is reported here for the first time in a polymorphic phase transformation. This observation has significant consequences for process and product control in the pharmaceutical and specialty chemicals industries.
    Original languageEnglish
    Pages (from-to)1954-1959
    Number of pages5
    JournalJournal of Physical Chemistry B
    Volume106
    Issue number8
    DOIs
    Publication statusPublished - 28 Feb 2002

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