white, glassy solid

~ 4

22 g/L in water

partially soluble in methanol

1860 °C, sublimates at 1500 °C

2.460 g/cm³, liquid;
2.55 g/cm³, trigonal;
3.11–3.146 g/cm³, monoclinic

450 °C (trigonal)
510 °C (tetrahedral)

3150 mg/kg (oral, rat)

ED7900000