thorium tetrabromide Chemical Properties

Melting point:

679°C

Boiling point:

857.23°C (estimate)

Density 

5.67 [CRC10]

form 

white hygroscopic crystals

color 

white hygroscopic crystals, crystalline

Water Solubility 

65 at 20℃

EPA Substance Registry System

Thorium bromide (ThBr4) (13453-49-1)

thorium tetrabromide Usage And Synthesis

Chemical Properties

colorless hygroscopic; -8 mesh with 99.5% purity; can be prepared by reacting Th with Br2; light sensitive and easily hydrolyzed [KIR83] [CER91] [CRC10]

Chemical Properties

Thorium (IV) bromide is deliquescent in moist air, readily soluble in water and alcohol. Soluble in ethylenediamine.

Preparation

The preparation of the bromides in a Br2-saturated nitrogen stream requires high temperatures if practical reaction rates are to be achieved. The oxide-carbon mixture must usually be heated to about 1100℃; this temperature is easily attained with a gas-air blast burner provided the quartz reactor is embedded in porous, refractory gravel ("Diatomite" gravel).