1290. Bismuth Tetroxide

Nomenclature

CAS number: 12048-50-9
“Bismuth peroxide”.
Bi2O4; mol wt 481.96.
Bi 86.72%, O 13.28%.

Description and references

It may contain 1 or 2 mols of H2O. Prepn: Gmelins, Bismuth (8th ed.) 19, 115 (1927); Schenk in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) p 629.

Properties

Orange-red to yellowish-brown heavy powder. Slowly dec by water without dissolving. Dec and dissolved by hot mineral acids.

Use

In lubricants for metal extrusion.