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Substance Name: Thorium
RN: 7440-29-1
UNII: 60YU5MIG9W
InChIKey: ZSLUVFAKFWKJRC-UHFFFAOYSA-N

Note

  • Thorium. A radioactive element of the actinide series of metals. It has an atomic symbol Th, atomic number 90, and atomic weight 232.04. It is used as fuel in nuclear reactors to produce fissionable uranium isotopes. Because of its radioopacity, various thorium compounds are used to facilitate visualization in roentgenography.

Molecular Formula

  • Th

Molecular Weight

  • 232.04
 

Classification Codes

  • 2007 CERCLA Priority List, Rank: 101
  • 2011 CERCLA Priority List, Rank: 102
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Names and Synonyms

Name of Substance

  • Thorium

MeSH Heading

  • Thorium

Synonyms

  • 232Th
  • EINECS 231-139-7
  • HSDB 864
  • Thorium
  • Thorium-232
  • UNII-60YU5MIG9W

Systematic Name

  • Thorium

Superlist Names

  • Thorium
  • Thorium metal, pyrophoric
  • Thorium metal, pyrophoric [UN2975] [Radioactive]
  • Thorium-232 and its decay products, dministered intravenously as a colloidal dispersion of 232ThO2
  • UN2975

Registry Numbers

CAS Registry Number

  • 7440-29-1

FDA UNII

  • 60YU5MIG9W

Other Registry Numbers

  • 15117-56-3
  • 24738-30-5

System Generated Number

  • 0007440291

Structure Descriptors

InChI

1S/Th

InChIKey

ZSLUVFAKFWKJRC-UHFFFAOYSA-N

Smiles

[Th]