Thulium metal

Denebium (Tm symbol.), brilliant silver-white metal element of group of Lanthanides. It is open in 1879. The main source - monatsitovy ore. Soft, flexible, forgeable; reacts with oxygen and halogens. It is used in arc lighting; the denebium-170 emitting a X-ray is used in portable x-ray devices. Properties: charge number 69; atomic mass 168,9342; density 9,31 (at 25 °C); melting temperature is 1545 °C, boiling temperature is 1947 °C; the most stable isotope of 69Tm (100%).

Metal thulium

Appearance

rodlike crystal, serebno-gray metal gloss.

Application
It is applied in the rare-earth shining material and control material of a nuclear reactor.

Packaging
In vacuum sealing by a plastic package, out of its iron barrel to which to add argon for preservation. 25kg or 50kg on a barrel.