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Hafnocene dichloride

CAS 12116-66-4

Hafnium, dichlorobis(η5-2,4-cyclopentadien-1-yl)-

EPA and Census publish no US supply data for this chemical.

Molecular structure of 12116-66-4
US productionNot reported
Top sourceNo public record

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

Where It Comes From

EPA and Census publish no US supply data for this chemical.

Why It Matters

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

Chemical Identity

CAS12116-66-4
PubChem CIDNot recorded
DTXSIDDTXSID901014538
FormulaC10H10Cl2Hf
Mol. Weight379.58 g/mol
SMILESCl[Hf]Cl.c1cccc1.c1cccc1

Data Sources

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Brief citations

Hafnocene dichloride (CAS 12116-66-4) https://chemicalindependence.com/chemical/12116-66-4/ EPA TSCA Inventory: CAS 12116-66-4. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory