· CAS:7440-54-2

· Molecular Formula: Gd

· Purity:99.9%

· Specification:- 100 mesh / - 200 mesh 

· EINECS No.:231-162-2

· Hazardous Class:Class 4.1

UN No.:UN3089

Package Class:Vacuum Bag or with argon protection sealed

Gadolinium Metal (Gd)-Powder

Characteristic

Gadolinium is a chemical element with the symbol Gd and atomic number 64. Gadolinium is a silvery-white metal when oxidation is removed. It is only slightly malleable and is a ductile rare-earth element.Gadolinium is magnetic at room temperature. Gadolinium is relatively stable in dry air and loses luster in moist air; gadolinium has the highest thermal neutron capture surface.

Phase at STP： solid

Melting point： 1585 K (1312 °C, 2394 °F)

Boiling point： 3273 K (3000 °C, 5432 °F)

Density (near r.t.)： 7.90 g/cm³

when liquid (at m.p.)： 7.4 g/cm³

Heat of fusion： 10.05 kJ/mol

Heat of vaporization： 301.3 kJ/mol

Molar heat capacity： 37.03 J/(mol·K)

Chemical Composition

Application

Gadolinium as a metal or a salt absorbs neutrons and is, therefore, used sometimes for shielding in neutron radiography and in nuclear reactors, MRI(magnetic Resonance Imaging), superconductive materials and magnetic refrigerator. Gadolinium is also used in nuclear marine propulsion systems as a burnable poison. Gadolinium as a phosphor is also used in other imaging. In X-ray systems, gadolinium is contained in the phosphor layer, suspended in a polymer matrix at the detector. It is used for making Gadolinium Yttrium Garnet (Gd:Y3Al5O12); it has microwave applications and is used in fabrication of various optical components and as substrate material for magneto-optical films. Gadolinium Gallium Garnet (GGG, Gd3Ga5O12) was used for imitation diamonds and for computer bubble memory. It can also serve as an electrolyte in Solid Oxide Fuel Cells (SOFCs).