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Stability-indicating method polymorphism

The HPLC method development requirements using short columns and fast HPLC to determine the assay concentration for each polymorph at the different temperatures are the same as for solubility determination. However, for stability evaluation of the different polymorphs a stability-indicating HPLC method should be used. [Pg.596]

Zircon, complete solid-solution behavior is observed, and a plot of the unit cell volume against x shows that Vdgard s Law is followed. When the end members are not is structural, a systematic change in the solubility range in both structures is found as A is varied, and the data have been systematized in terms of a simple, potentially predictive, structure-field map. The pervasive polymorphism of these ABO4 compounds, involving both reconstructive and displacive transformations and metastable structures produced by different sample preparation methods, indicates that the crystal structural stability of substituted compounds needs to be carefully evaluated as a function of temperature to assess the structural integrity of waste-form materials. [Pg.295]

See other pages where Stability-indicating method polymorphism is mentioned: [Pg.15]    [Pg.344]    [Pg.51]    [Pg.435]    [Pg.139]    [Pg.390]    [Pg.323]    [Pg.124]    [Pg.537]    [Pg.16]    [Pg.429]    [Pg.286]    [Pg.298]    [Pg.350]    [Pg.178]    [Pg.208]    [Pg.123]    [Pg.397]    [Pg.26]    [Pg.51]    [Pg.2273]    [Pg.2316]    [Pg.66]    [Pg.119]    [Pg.124]    [Pg.127]    [Pg.366]    [Pg.1534]   
See also in sourсe #XX -- [ Pg.150 ]



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Polymorph stability

Polymorphic stability

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