T. Calvet et al., SPONTANEOUS CRYSTALLIZATION IN UNDERCOOLED LIQUID-MIXTURES OF L-LIMONENE PLUS L-CARVONE, Recueil des travaux chimiques des Pays-Bas, 115(6), 1996, pp. 333
The two related monoterpenes l-carvone (m.p. - 29 degrees C) and I-lim
onene (m.p. - 74 degrees C) when cooled to -120 degrees C in DSC exper
iments remain in the liquid state. On subsequent heating to room tempe
rature carvone crystallizes spontaneously at -75 degrees C whereafter
it melts at -29 degrees C. Limonene, on the other hand, does not cryst
allize at all; to understand its behaviour, mixtures with carvone were
investigated.