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Uranium oxide (UO3)

CAS 1344-58-7

Molecular structure of 1344-58-7
US productionNot reported
Import value, 2024$4.6B
Top sourceItaly 26%

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 284420 · narrow

These shares come from HS customs code 284420, which covers 3 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IT 26%ItalyGB 24%United KingdomDE 15%GermanyRU 14%RussiaNL 13%Netherlands

Why It Matters

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

Chemical Identity

CAS1344-58-7
PubChem CIDNot recorded
DTXSIDDTXSID901014433
FormulaO3U
Mol. Weight286.026 g/mol
SMILESO=[U](=O)=O

Data Sources

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Brief citations

Uranium oxide (UO3) (CAS 1344-58-7) https://chemicalindependence.com/chemical/1344-58-7/ EPA TSCA Inventory: CAS 1344-58-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 284420 for CAS 1344-58-7. Reporting year: 2024. https://usatrade.census.gov/