CAS number : 7440-54-2
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Description :
Gadolinium is a silvery-white metallic metal that is malleable and ductile. It is relatively stable in dry air but in a moist environment will form an oxide coating. The metal has a hexagonal close packed structure at ambient temperatures but transforms at 1262 °C to a body centered cubic structure. Gadolinium has a density of 7.895 gm/cm3, a melting point of 1312 °C, and a boiling point of 3000 °C. Gadolinium oxide, or gadolinia, occurs as a sesquioxide with the formula Gd2O3. The trivalent oxide is a white powder with a specific gravity of 7.60 gm/cm3 and a formula weight of 362.50. Gadolinium has 17 isotopes of which 7 are naturally occurring. Gadolinium is ferromagnetic at temperatures below 20 °C (68 °F) and is strongly parama
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