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Thorium oxide (ThO2)

CAS 1314-20-1

US productionNot reported
Import value, 2024$1M
Top sourceCanada 59%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 284430 · basket

These shares come from HS customs code 284430, which covers 7 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CA 59%CanadaIT 30%ItalyGB 8%United KingdomCH 3%SwitzerlandDE 1%Germany

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS1314-20-1
PubChem CIDNot recorded
DTXSIDDTXSID0051657
FormulaO2Th
Mol. Weight264.036 g/mol
SMILES[O--].[O--].[Th+4]

Data Sources

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Brief citations

Thorium oxide (ThO2) (CAS 1314-20-1) https://chemicalindependence.com/chemical/1314-20-1/ EPA TSCA Inventory: CAS 1314-20-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 284430 for CAS 1314-20-1. Reporting year: 2024. https://usatrade.census.gov/