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Thorium oxide

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  • Name Thorium oxide
  • EINECS215-225-1
  • CAS No. 1314-20-1
  • Density9.86 g/cm3
  • PSA34.14000
  • LogP-0.23760
  • SolubilityInsoluble in water
  • Melting Point3050 °C
  • FormulaO2Th
  • Boiling Point4400 °C
  • Molecular Weight264.04
  • Flash PointN/A
  • Transport InformationUN 2910 7
  • Appearancewhite, crystalline powder
  • Safety53-36/37/39-45
  • Risk Codes45-23/24/25-33
  • Molecular Structure
    Molecular Structure of 1314-20-1 (Thorium dioxide)
  • Hazard SymbolsToxicT,RadioactiveR
  • SynonymsToxicT,RadioactiveR

Thorium oxide Consensus Reports

NTP 10th Report on Carcinogens. Community Right-To-Know List. Reported in EPA TSCA Inventory.

Thorium oxide Specification

The Thorium oxide, with the CAS registry number 1314-20-1, is also known as Thorium dioxide. It belongs to the product categories of Inorganics; Catalysis and Inorganic Chemistry; Chemical Synthesis; Thorium; Metal Oxide. Its EINECS registry number is 215-225-1. This chemical's molecular formula is O2Th and molecular weight is 264.04. What's more, both its IUPAC name and systematic name are the same which is called Dioxothorium. Thorium oxide is a white, crystalline powder. It is produced mainly as a by-product of lanthanide and uranium production. This chemical is used in high-temperature ceramics, gas mantles, nuclear fuel, flame spraying, crucibles, non-silicia optical glass, catalysis, filaments in incandescent lamps, cathodes in electron tubes and arc-melting electrodes.

Physical properties about Thorium oxide are:
(1)#H bond acceptors: 2; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 0; (4)Polar Surface Area: 34.14 Å2; (5)Density: 9.86 g/cm3; (6)Melting Point: 3050 °C; (7)Boiling Point: 4400 °C.

Preparation of Thorium oxide:
this chemical can be prepared by thorium nitrate with oxalic acid.
Th(NO3)4 + 2 H2C2O4 → Th(C2O4)2 + 4 HNO3
Th(C2O4)2 → ThO2 + 2CO2 + 2CO

Safety information of Thorium oxide:
When you are dealing with this chemical, you should be very careful. This chemical may cause damage to health at low levels. It can produce or increase the incidence of non-heritable effects in progeny and/or an impairment in reproductive functions or capacity. This chemical is toxic by inhalation, in contact with skin and if swallowed. In addition, it may cause cancer and it has danger of cumulative effects. Therefore, you should wear suitable protective clothing, gloves and eye/face protection. You should avoid exposuring and obtain special instructions before using it. In case of accident or if you feel unwell seek medical advice immediately.

You can still convert the following datas into molecular structure:
(1) SMILES: O=[Th]=O
(2) InChI: InChI=1S/2O.Th
(3) InChIKey: ZCUFMDLYAMJYST-UHFFFAOYSA-N

The toxicity data of Thorium oxideis as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 intratracheal > 1140mg/kg (1140mg/kg)   Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975.
 

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