Thorium dioxide
Enlarge text Shrink text-
Topic
|
מספר מערכת
987007593188405171
Information for Authority record
Name (Hebrew)
דו-תחמוצת תוריום
Name (Latin)
Thorium dioxide
Name (Arabic)
ثاني أكسيد الثوريوم
Other forms of name
Thoria
Thorina
Thorium anhydride
See Also From tracing topical name
Metallic oxides
Thorium compounds
MARC
MARC
Other Identifiers
Wikidata:
Q420634
Library of congress:
sh2012003207
Sources of Information
- Wikipedia, Aug. 12, 2012:Thorium dioxide (Thorium dioxide (ThO₂), also called thorium(IV) oxide is a white, crystalline powder. It was formerly known as thoria or thorina. It is produced mainly as a by-product of lanthanide and uranium production. Thorianite is the name of the mineralogical form of thorium dioxide. The compound is radioactive due to the radioactivity of thorium. IUPAC name: Thorium dioxide; Thorium(IV) oxide. Other names: thoria; thorium anhydride) Thorium (under Compounds: Thorium dioxide has the highest melting point (3300 °C) of all oxides.)
- The American heritage dict. of the English lang., c2000, via TheFreeDictionary.com, Aug. 12, 2012(thorium dioxide: A heavy white powder, ThO₂, obtained from monazite and used mainly in ceramics, glass, and gas mantles and as a catalyst. Also called thoria; thorianite: A highly radioactive blackish, greenish, or yellow mineral, ThO₂, isomorphous with uraninite.)
- Physical constants of thorium dioxide, via International Bio-Analytical Industries, Inc. website, Aug. 12, 2012(Chemical Name: Thorium (IV) oxide (99.99%-Th); Chemical Family: metal oxide. Synonym: Thorium dioxide, thoria, thorianite)
- McGraw-Hill dictionary of scientific & technical terms, ©2003, via TheFreeDictionary.com, Aug. 12, 2012(thorianite (mineralogy) ThO₂ A radioactive mineral that crystallizes in the isometric system, occurs in worn cubic crystals, is brownish black to reddish brown in color, and has resinous luster; hardness is 7 on the Mohs scale, and specific gravity is 9.7-9.8.)
- The Columbia electronic encyclopedia, ©2007, via TheFreeDictionary.com, Aug. 13, 2012(Thorium forms numerous compounds with other elements. The most important thorium compound is the oxide (thoria, ThO₂), which is the major incandescent component of the Welsbach mantle; it is also used in crucibles, in special highly refractive optical glass, and in catalysts for several industrially important chemical reactions.)
1 / 2
Thorotrast
The original uploader was Deglr6328 at English Wikipedia., Public domain
File:Yellowing of thorium lenses.jpg
El Grafo, CC BY-SA 4.0
Wikipedia description:
Thorium dioxide (ThO2), also called thorium(IV) oxide, is a crystalline solid, often white or yellow in colour. Also known as thoria, it is mainly a by-product of lanthanide and uranium production. Thorianite is the name of the mineralogical form of thorium dioxide. It is moderately rare and crystallizes in an isometric system. The melting point of thorium oxide is 3300 °C – the highest of all known oxides. Only a few elements (including tungsten and carbon) and a few compounds (including tantalum carbide) have higher melting points. All thorium compounds, including the dioxide, are radioactive because there are no stable isotopes of thorium.
Read more on Wikipedia >