· CAS:7440-30-4

· Molecular Formula: Tm

· Purity:99.9%

· Specification:- 100 mesh / - 200 mesh 

· EINECS No.:231-140-2

· Hazardous Class:Class 4.1

UN No.:UN3089

Package Class:Vacuum Bag or with argon protection sealed

Thulium Metal (Tm)-Powder

Characteristic

Thulium is a chemical element with the symbol Tm and atomic number 69. It is the thirteenth and third-last element in the lanthanide series. Thulium is relatively stable in air; thulium oxide is light green crystal. Silver-white metal, soft, with high vapor pressure at melting point.

Phase at STP： solid

Melting point： 1818 K (1545 °C, 2813 °F)

Boiling point： 2223 K (1950 °C, 3542 °F)

Density (near r.t.)： 9.32 g/cm3

when liquid (at m.p.)： 8.56 g/cm3

Heat of fusion： 16.84 kJ/mol

Heat of vaporization： 191 kJ/mol

Molar heat capacity： 27.03 J/(mol·K)

Chemical Composition

Application

Thulium is mainly used in the production of additives for neodymium iron boron alloys, giant magnetostrictive materials,magneto optical storage materials and nonferrous metal alloy casting.Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices, and in some solid-state lasers. It has no significant biological role and is not particularly toxic.