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  • Thorium dioxide - Wikipedia

    OverviewStructure and reactionsApplicationsCited sources

    Thorium dioxide (ThO2), also called thorium(IV) oxide, is a crystalline solid, often white or yellow in color. Also known as thoria, it is produced mainly as 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 hi

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  • Thorium dioxide ThO2 - PubChem

    Thorium Dioxide is a radioactive crystalline solid compound used in a broad range of industrial applications. Thorium dioxide was utilized as a radiographic contrast agent; however, it is no longer considered safe for use in human patients because it was found to be a carcinogen that can cause cholangiocarcinoma.

  • Thorium - Cancer-Causing Substances - National Cancer ...

    Thorium also has been widely used in lantern mantles for the brightness it imparts (though alternatives are replacing it), and in welding rods, which burn better with small amounts of added thorium. Until the 1950s, thorium dioxide was used as a contrast agent (called Thorotrast) in medical radiology.

  • Thorium Dioxide - an overview ScienceDirect Topics

    Kheman Rajkomar, Jonathan B. Koea, in Blumgart's Surgery of the Liver, Biliary Tract and Pancreas, 2-Volume Set (Sixth Edition), 2017. Chemical Agents. Thorotrast (thorium dioxide) was used as a radiologic contrast agent between 1928 and 1950.It is an alpha emitter with a biologic half-life of 400 years. It accumulates in the reticuloendothelial cells in the liver and spleen and increases the ...

  • Material Safety Data Sheet - Fisher Scientific

    OSHA Vacated PELs: Thorium Dioxide: No OSHA Vacated PELs are listed for this chemical. Personal Protective Equipment Eyes: Wear appropriate protective eyees or chemical safety goggles as described by OSHA's eye and face protection regulations in

  • THORIUM DIOXIDE HAZARD SUMMARY Thorium Dioxide

    THORIUM DIOXIDE page 3 of 6 * If there is the possibility of skin exposure, emergency shower facilities should be provided. * On skin contact with Thorium Dioxide, immediately wash or shower to remove the chemical. At the end of the workshift, wash any areas of the body that may have contacted Thorium Dioxide, whether or not known skin

  • THORIUM OXIDE, [RADIOACTIVE MATERIAL, LOW SPECIFIC ACTIVITY]

    White powder. Density 9.7 g / cm3. Not soluble in water. Used in high-temperature ceramics, gas mantles, nuclear fuel, flame spraying, crucibles, non-silicia optical , catalysis, filaments in incandescent lamps, cathodes in electron tubes and arc-melting electrodes.

  • THORIUM DIOXIDE HAZARD SUMMARY Thorium Dioxide

    THORIUM DIOXIDE page 3 of 6 * If there is the possibility of skin exposure, emergency shower facilities should be provided. * On skin contact with Thorium Dioxide, immediately wash or shower to remove the chemical. At the end of the workshift, wash any areas of the body that may have contacted Thorium Dioxide, whether or not known skin

  • Material Safety Data Sheet - Fisher Scientific

    OSHA Vacated PELs: Thorium Dioxide: No OSHA Vacated PELs are listed for this chemical. Personal Protective Equipment Eyes: Wear appropriate protective eyees or chemical safety goggles as described by OSHA's eye and face protection regulations in

  • Thorium Dioxide OEHHA

    Explore information about Air pollutants, contaminants and studies being done

  • Thorium dioxide - LC Linked Data Service: Authorities and ...

    found: 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.

  • Thorium Dioxide Toxicity (hazard) - Digitalfire

    E-On skin contact with Thorium Dioxide, immediately wash or shower to remove the chemical. At the end of the workshift, wash any areas of the body that may have contacted Thorium Dioxide, whether or not known skin contact has occurred. F-Do not eat, smoke, or drink where Thorium Dioxide is handled, processed, or stored, since the chemical can ...

  • Thorium Oxide AMERICAN ELEMENTS

    Thorium Oxide is a highly insoluble thermally stable Thorium source suitable for , optic and ceramic applications. Thorium Oxide is generally immediately available in most volumes. Ultra high purity and high purity compositions improve both optical quality and usefulness as scientific standards.

  • thorium Description, Properties, Uses Britannica

    The metal may be extruded, rolled, forged, swaged, and spun, but drawing is difficult because of thorium’s low tensile strength.This and other physical properties such as melting and boiling points are greatly affected by small amounts of certain impurities, such as carbon and thorium dioxide. Thorium is added to magnesium and magnesium alloys to improve their high-temperature strength.

  • Thorium Dioxide SDS IBILABS

    Thorium dioxide. CAS-No. 1314-20-1. Revision Date. 2007-09-28. 16. OTHER INFORMATION. Full text of H-Statements referred to under sections 2 and 3. Acute Tox. Acute toxicity. Carc. Carcinogenicity. H301 Toxic if swallowed. H301 + H311 + H331. Toxic if swallowed, in contact with skin or if inhaled. H311 Toxic in contact with skin. H331 Toxic if ...

  • Thorium As Nuclear Fuel: the good and the bad

    Thorium fuel is a bit harder to prepare. Thorium dioxide melts at 550 degrees higher temperatures than traditional Uranium dioxide, so very high temperatures are required to produce high-quality solid fuel. Additionally, Th is quite inert, making it difficult to chemically process. This is irrelevant for fluid-fueled reactors discussed below.

  • Thorium Dioxide - an overview ScienceDirect Topics

    Thorium is radioactive, giving off both alpha and gamma radiation. Employers should consider the use of an alternative, thorium free electrode, to reduce the risk from radioactivity. Bulk supplies of thoriated tungsten electrodes should be stored in a metal cabinet or box, labelled to indicate the contents.

  • Radionuclide Basics: Thorium Radiation Protection US EPA

    Thorium (chemical symbol Th) is a naturally occurring radioactive metal found at trace levels in soil, rocks, water, plants and animals. Thorium is solid under normal conditions. There are natural and man-made forms of thorium, all of which are radioactive. In general, naturally occurring thorium exists as Th-232, Th-230 or Th-228.

  • Sample Preparation Guides - Inorganic Ventures

    Thorium-bearing minerals are widespread, but generally in small amounts. Monazite is the principal source of Th. Uranium is estimated to be present in the earth's crust at about 4 ppm and occurs combined with silicates, phosphates, and zirconates.

  • Thorium Oxide Powder AMERICAN ELEMENTS

    Thorium dioxide CAS-No. 1314-20-1 Revision Date 1993-04-24 New Jersey Right To Know Components Thorium dioxide CAS-No. 1314-20-1 Revision Date 1993-04-24 California Prop. 65 Components WARNING! This product contains a chemical known to the State of California to cause cancer. Thorium dioxide

  • Thorium Dioxide - an overview ScienceDirect Topics

    Thorium is radioactive, giving off both alpha and gamma radiation. Employers should consider the use of an alternative, thorium free electrode, to reduce the risk from radioactivity. Bulk supplies of thoriated tungsten electrodes should be stored in a metal cabinet or box, labelled to indicate the contents.

  • Radionuclide Basics: Thorium Radiation Protection US EPA

    Thorium (chemical symbol Th) is a naturally occurring radioactive metal found at trace levels in soil, rocks, water, plants and animals. Thorium is solid under normal conditions. There are natural and man-made forms of thorium, all of which are radioactive. In general, naturally occurring thorium exists as Th-232, Th-230 or Th-228.

  • Sample Preparation Guides - Inorganic Ventures

    Thorium-bearing minerals are widespread, but generally in small amounts. Monazite is the principal source of Th. Uranium is estimated to be present in the earth's crust at about 4 ppm and occurs combined with silicates, phosphates, and zirconates.

  • Thorium Oxide Powder AMERICAN ELEMENTS

    Thorium dioxide CAS-No. 1314-20-1 Revision Date 1993-04-24 New Jersey Right To Know Components Thorium dioxide CAS-No. 1314-20-1 Revision Date 1993-04-24 California Prop. 65 Components WARNING! This product contains a chemical known to the State of California to cause cancer. Thorium dioxide

  • Thorium monoxide - Wikipedia

    Thorium monoxide (thorium(II) oxide), is the binary oxide of thorium having chemical formula ThO. The covalent bond in this diatomic molecule is highly polar.The effective electric between the two atoms has been calculated to be about 80 gigavolts per centimeter, one of

  • Thorium dioxide chemical compound Britannica

    Other articles where Thorium dioxide is discussed: monazite: monazite frequently contains 10–12 percent thorium dioxide (ThO2) and thus represents a major commercial source of thorium as well. Countries in which monazite is mined include India, Malaysia, Vietnam, and Brazil. For detailed physical properties, see phosphate mineral (table).

  • WikiZero - Thorium dioxide

    Thorium dioxide (ThO 2), also called thorium(IV) oxide, is a crystalline solid, often white or yellow in color.Also known as thoria, it is produced mainly as 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 ...

  • ATSDR - Toxic Substances - Thorium

    Mar 03, 2011  Thorium is a naturally occurring, radioactive substance. In the environment, thorium exists in combination with other minerals, such as silica. Small amounts of thorium are present in all rocks, soil, water, plants, and animals. Soil contains an average of about 6 parts of thorium per million parts of soil (6 ppm). More than 99% of natural thorium exists in the form of thorium-232.

  • Thorium Dioxide Colorado PROFILES

    "Thorium Dioxide" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings).Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

  • Thorium Dioxide OEHHA

    Explore information about Air pollutants, contaminants and studies being done

  • Advantage and Disadvantages of Thorium Reactors - Pros and ...

    Compared to the predominant reactor fuel, uranium dioxide (UO 2), thorium dioxide (ThO 2) has a higher melting point, higher thermal conductivity, and lower coefficient of thermal expansion. In particular the thermal conductivity is important, since it leads to a lower fuel pellets temperature.

  • Thorium Dioxide 100 Grams eBay

    Thorium Dioxide 100 grams Also Sold by the kg (2.2 pounds) price negotiable. Thorium dioxide, also called thorium(IV) oxide, is a crystalline solid, often white or yellow in color, it is produced mainly as a by-product of lanthanide and uranium production. (99% Min Pure) RADIOACTIVE This listing meets U.S.P.S domestic shipping requirements for exempt limited quantities of class 7 materials ...

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  • Thorium oxide >=99.0% 1314-20-1 O2Th Sigma-Aldrich

    Thorium oxide ≥99.0%; CAS Number: 1314-20-1; EC Number: 215-225-1; Linear Formula: O2Th; find Sigma-Aldrich-89170 MSDS, related peer-reviewed papers, technical documents, similar products more at Sigma-Aldrich.

  • Thorotrast Radiation And Mesothelioma, Radiation Exposure ...

    For more information, contact the mesothelioma lawyers of Williams Hart at 800-781-3955 today. Radiation Exposure . Thorium dioxide was often used to provide a medium for contrast when administering x-ray tests. Later tests showed that some individuals who

  • Advantage and Disadvantages of Thorium Reactors - Pros and ...

    Compared to the predominant reactor fuel, uranium dioxide (UO 2), thorium dioxide (ThO 2) has a higher melting point, higher thermal conductivity, and lower coefficient of thermal expansion. In particular the thermal conductivity is important, since it leads to a lower fuel pellets temperature.

  • Thorium Dioxide 100 Grams eBay

    Thorium Dioxide 100 grams Also Sold by the kg (2.2 pounds) price negotiable. Thorium dioxide, also called thorium(IV) oxide, is a crystalline solid, often white or yellow in color, it is produced mainly as a by-product of lanthanide and uranium production. (99% Min Pure) RADIOACTIVE This listing meets U.S.P.S domestic shipping requirements for exempt limited quantities of class 7 materials ...

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  • Thorium oxide >=99.0% 1314-20-1 O2Th Sigma-Aldrich

    Thorium oxide ≥99.0%; CAS Number: 1314-20-1; EC Number: 215-225-1; Linear Formula: O2Th; find Sigma-Aldrich-89170 MSDS, related peer-reviewed papers, technical documents, similar products more at Sigma-Aldrich.

  • Thorotrast Radiation And Mesothelioma, Radiation Exposure ...

    For more information, contact the mesothelioma lawyers of Williams Hart at 800-781-3955 today. Radiation Exposure . Thorium dioxide was often used to provide a medium for contrast when administering x-ray tests. Later tests showed that some individuals who

  • Thorium dioxide - Substance Information - ECHA

    Substance Information. Substance Infocard. ... Thorium dioxide. Regulatory process names 10 IUPAC names 1 Other identifiers 3 . Print infocard. Substance identity Substance identity. ... is toxic in contact with skin, is toxic if inhaled and may cause damage to

  • Thorium Th - PubChem

    Thorium is a naturally occurring, radioactive substance. In the environment, thorium exists in combination with other minerals, such as silica. Small amounts of thorium are present in all rocks, soil, water, plants, and animals.Soil contains an average of about 6 parts of thorium per million parts of soil (6 ppm). More than 99% of natural thorium exists in the form of thorium-232.

  • Thorium dioxide - WikiMili, The Best Wikipedia Reader

    Thdioxideorium (ThO 2), also called thorium(IV) oxide, is a crystalline solid, often white or yellow in color.Also known as thoria, it is produced mainly as a by-product of lanthanide and uranium production. [4] 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 ...

  • Thoriated Camera Lens (ca. 1970s) - ORAU

    Thoriated Camera Lens (ca. 1970s) ... The gamma and beta emissions from high thorium content lenses in photographic cameras have the potential to degrade the film if the latter was left in the camera for a substantial period of time. In addition, the self-irradiation of the camera lens leads to a gradual darkening of the that reduces ...

  • What acid can dissolve thorium dioxide?

    Thorium dioxide can be dissolved in the mixture of hydrofluoric acid and hydrochloric acid, as described by Kluger and Lieser in 1981. 1 Proceed with caution since hot condensed acid are known to be highly corrosive and hydrofluoric acid is also highly toxic and penetrating .

  • Thorium Dioxide Medical Definition Merriam-Webster ...

    Medical definition of thorium dioxide: a refractory crystalline compound obtained usually as a dense white powder and formerly used as a contrast medium in radiography —called also thorium

  • CAS 1314-20-1 : THORIUM DIOXIDE

    Thorium dioxide - CAS # 1314-20-1 Information provided on Thorium dioxide (1314-20-1) is for reference only and is subject to change. There is no warranty of accuracy or completeness of any information contained herein.

  • EPA Facts about Thorium

    EPA Facts about Thorium What is thorium? Thorium is a naturally occurring radioactive metal that is found at low levels in soil, rocks, water, plants, and animals. Almost all naturally occurring thorium exists in the form of either radioactive isotope thorium-232, thorium-230, and thorium

  • Thorium dioxide definition and meaning Collins English ...

    Thorium dioxide definition: a heavy insoluble white powder used in incandescent mantles . Formula: ThO 2 Meaning, pronunciation, translations and examples

  • Thorium Dioxide Toxicity - Digitalfire

    E-On skin contact with Thorium Dioxide, immediately wash or shower to remove the chemical. At the end of the workshift, wash any areas of the body that may have contacted Thorium Dioxide, whether or not known skin contact has occurred. F-Do not eat, smoke, or drink where Thorium Dioxide is handled, processed, or stored, since the chemical can ...

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