Characteristic

 

Dysprosium is a chemical element with the symbol Dy and atomic number 66. It is a rare earth element with a metallic silver luster. 

Phase at STP： solid

Melting point： 1680 K (1407 °C, 2565 °F)

Boiling point： 2840 K (2562 °C, 4653 °F)

Density (near r.t.)： 8.540 g/cm³

when liquid (at m.p.)： 8.37 g/cm³

Heat of fusion： 11.06 kJ/mol

Heat of vaporization： 280 kJ/mol

Molar heat capacity： 27.7 J/(mol·K)

 

Application

 

Dysprosium is used, in conjunction with vanadium and other elements, in making laser materials and commercial lighting. Because of dysprosium's high thermal-neutron absorption cross-section, dysprosium-oxide–nickel cermets are used in neutron-absorbing control rods in nuclear reactors.

Dysprosium is used in dosimeters for measuring ionizing radiation.

Dysprosium iodide and dysprosium bromide are used in high-intensity metal-halide lamps. These compounds dissociate near the hot center of the lamp, releasing isolated dysprosium atoms. 

Several paramagnetic crystal salts of dysprosium (Dysprosium Gallium Garnet, DGG; Dysprosium Aluminum Garnet, DAG; Dysprosium Iron Garnet, DyIG) are used in adiabatic demagnetization refrigerators.

Dy_MSDS.pdf