Purity: 99.95% ? 99.999% (depending on grade)

Appearance: Silvery-white, shiny, heavy liquid

Molecular Weight: 200.59 g/mol

Density: 13.534 g/cm? at 25?C

Boiling Point: 356.7 ?C

Melting Point: -38.83 ?C

Vapor Pressure: 0.00185 mmHg at 25?C

Solubility: Insoluble in water; soluble in nitric acid, concentrated sulfuric acid, and aqua
regia

Odor: Odorless