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CAS 1314-20-1

CAS 1314-20-1 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 1314-20-1
CAS 1314-20-1PubChem CID 14808

THORIUM OXIDE (ThO2)

Thorium oxide, [radioactive material, low specific activity] is a 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 glass, catalysis, filaments in incandescent lamps, cathodes in electron tubes and arc-melting electrodes. — CAMEO Chemicals

IUPAC name
dioxothorium
Molecular formula
O2Th
Molecular weight
264.036 g/mol
Exact mass
264.02788 Da
Topological polar surface area
34.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

THORIUM DIOXIDEThoriaUmbrathorThorium anhydrideThortrastDioxide, Thorium9XA7X17UQCCHEBI:37339
13 more reported names
Oxide, ThoriumRefChem:189704215-225-1Thorium(IV) oxideThO2ThorotrastThorianiteThorium-232 dioxideHSDB 6364EINECS 215-225-1UNII-9XA7X17UQCThorium oxide, >=99.0%Thorium Oxide Nanoparticle Dispersion
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 1314-20-1

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How CAS 1314-20-1 is used on this site

CAS 1314-20-1 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 1314-20-1 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.