4. According to data available on internet, the substance would be liquid at room temperature, with two polymorphs, alpha which would exist as black needles, with a melting point of 27.2 °C, and beta, which would exist as black platelets with a melting point of 13.9 °C. The beta form would tend to convert to the more stable alpha form.
4. Selon les informations disponibles sur Internet, la matière serait liquide à température ambiante et polymorphe, la forme alpha (aiguilles noires) ayant un point de fusion de 27,2 °C et la forme bêta (plaquettes noires) ayant un point de fusion de 13,9 °C. La matière, lorsqu &apos; elle est sous la forme bêta, tend à passer à la forme alpha, plus stable.