6533b85afe1ef96bd12b9e6e

RESEARCH PRODUCT

Thermoanalytical studies on phases of D-mannitol

P. PerkkalainenH. RautiainenI. Pitkänen

subject

Slow heatingCrystallographyMaterials scienceD-mannitollawEnthalpy of fusionAnalytical chemistryCooling ratesPhysical and Theoretical ChemistryCrystallizationCondensed Matter PhysicsInstrumentationlaw.invention

description

Abstract D-mannitol exists in several polymorphic crystalline forms. The conditions of crystallization are not well-defined, and in some cases mixtures of the different forms are obtained. In the DSC study the different forms melted nearly at the same temperature (166±°C). The heat of fusion of the k form was lower than those of the other forms. With slow heating rate (2 ° C min ) the δ form changed to k between 140 and 165 °C. The crystallization of D-mannitol from the melt gave from one to seven peaks in the DSC between 95 and 126 °C depending on cooling rates and the amounts of sample.

yearjournalcountryeditionlanguage
1993-01-01Thermochimica Acta
https://doi.org/10.1016/0040-6031(93)80051-b