Thulium Element Cube - 2" Acrylic Display - Atomic Number 69
$115.26
Sale price
$115.26
Regular price
$144.08
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Thulium Element Cube - 2" Acrylic Display - Atomic Number 69
$115.26
Sale price
$115.26
Regular price
$144.08
Thulium's atomic number is 69 and its symbol is Tm. It is an easily workable metal with a bright silvery-gray luster. It is fairly soft and slowly tarnishes in air. 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.
High-purity thulium oxide was first offered commercially in the late 1950s, as a result of the adoption of ion-exchange separation technology. Lindsay Chemical Division of American Potash & Chemical Corporation offered it in grades of 99% and 99.9% purity. The price per kilogram oscillated between US$4,600 and $13,300 in the period from 1959 to 1998 for 99.9% purity, and it was the second highest for the lanthanides behind lutetium.
This display is contained within crystal clear lucite acrylic.
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