SPM and SPA behave quite differently on both DSC and TGA thermal analyses.
SPA undergoes endothermic transitions at 364° C. and 409°C. that are accompanied by a Weight loss of 72%. In contrast,
SPM undergoes an endothermic transition at about 65° C.
that is accompanied by a 5% Weight loss, folloWed by
transitions similar to those exhibited by SPA. the loW
temperature transition is consistent With loss of Water from
SPM. the theoretical amount of Water contained in SPM is
6.%.