Ame: mercury Formula: hg Molecular weight: 200.59 Deleted cas: 92786-62-4|123720-03-6|149038-91-5|51887-47-9|8030-64-6|92355-34-5 Synonyms: Mercuryelement;quicksilver;mercury (ii);mercury (2+);mercury dication;mercury, ion (hg2+); Einecs: 231-106-7 Density: 13.54 g/cm3 Melting point: -38.9 °c Boiling point: 356.6 °c(lit.) Risk codes: 25-48/21/22-51/53-33-23-34-36/37/38 Safety: 7-45-60-36/37/39-26 Transport information: un 3289 6.1/pg 2 Method: distillation; an important proportion of used mercury is recovered by redistillation.