Hafnium chloride oxide (HfCl2O)

CAS 13759-17-6

U.S. production volumes are classified as confidential business information.

Cl₂H₂HfO-₂267.4 g/mol

no molecular structure to draw

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$44M

Import volumeZero

Top sourceChina 69%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 282749 · basket

EPA reports by year

2023: US production Confidential · Imports Zero
2019: US production Confidential · Imports Zero

These shares come from HS customs code 282749, which covers 8 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 69%ChinaIN 25%IndiaJP 3%JapanCA 2%CanadaCO 1%Colombia

Vietnam
Mexico
Germany
United Kingdom
Armenia

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Ati

Why It Matters

Sectors

Metals & Mining

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

Industrial Uses

•Intermediate in Primary Metal Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS13759-17-6

PubChem CID101527077

DTXSIDDTXSID9065607

FormulaCl2H2HfO-2

Mol. Weight267.4 g/mol

SMILESO.[Cl-].[Cl-].[Hf]

Data Sources

EPA CompTox (DSSTox) · DTXSID9065607Retrieved 2026-04-06
PubChem · compound 101527077Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Hafnium chloride oxide (HfCl2O) (CAS 13759-17-6) https://chemicalindependence.com/chemical/13759-17-6/ EPA CompTox (DSSTox): DTXSID9065607. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9065607 PubChem: 101527077. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/101527077 EPA Chemical Data Reporting: 13759-17-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 13759-17-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 282749 for CAS 13759-17-6. Reporting year: 2024. https://usatrade.census.gov/