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Disappearing polymorph

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In materials science, a disappearing polymorph is a form of a crystal structure (a morph) that is suddenly unable to be produced, instead transforming into a different crystal structure with the same chemical composition (a polymorph) during nucleation. Sometimes the resulting transformation is extremely hard or impractical to reverse, because the new polymorph may be more stable. That is, they are metastable forms that have been replaced by more stable forms.

Disappearing polymorph - Wikipedia Jump to content From Wikipedia, the free encyclopedia Phenomenon in materials science Needles of two different polymorphs of metanilic acid taken under a microscope at 20× magnification. Figure (a) shows Form II and (b) shows Form III; Form I was unable to be reproduced by researchers, an instance of a disappearing polymorph. [ 1 ] In materials science , a disappearing polymorph is a form of a crystal structure (a morph ) that is suddenly unable to be produced, instead transforming into a different crystal structure with the same chemical composition

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