Cerium Oxide

“Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife.
It is the most common of the lanthanides, followed by neodymium, lanthanum, and praseodymium.
Today, cerium and its compounds have a variety of uses: for example, cerium(IV) oxide is used to polish glass and is an important part of catalytic converters. Cerium metal is used in ferrocerium lighters for its pyrophoric properties.”

. Formula: CeO2
. CAS No.: 1306-38-3
. Molecular Weight: 172.12
. Density: 7.22 g/cm3
. Melting point: 2,400° C
. Appearance: Yellow to tan powder
. Solubility: Insoluble in water, moderately soluble in strong mineral acids
. Stability: Slightly hygroscopic