Dysprosium

CAS 7429-91-6

Dy162.5 g/mol

no molecular structure to draw

US productionNot reported

Import value, 2024$5M

Top sourceChina 78%

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 280530 · basket

These shares come from HS customs code 280530, which covers 16 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 78%ChinaCA 9%CanadaGB 8%United KingdomJP 2%JapanNL 1%Netherlands

Hong Kong
Turkey
Czech Republic
Germany
Australia

Why It Matters

SectorsNot recorded

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Chemical Identity

CAS7429-91-6

PubChem CID23912

DTXSIDDTXSID5064673

FormulaDy

Mol. Weight162.5 g/mol

SMILES[Dy]

Data Sources

PubChem · compound 23912Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Dysprosium (CAS 7429-91-6) https://chemicalindependence.com/chemical/7429-91-6/ PubChem: 23912. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/23912 EPA TSCA Inventory: CAS 7429-91-6. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 280530 for CAS 7429-91-6. Reporting year: 2024. https://usatrade.census.gov/