Vanadium, trichlorooxo-, (T-4)-

CAS 7727-18-6

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

Molecular structure of 7727-18-6 — 3 HCl

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

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 Confidential
2019: US production Confidential · Imports Confidential

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.

U.S. Vanadium

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

W. R. Grace & Co. - Conn.

EPA-registered importers (2)

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

Lion Copolymer Holdings

Lyondell Chemical

Why It Matters

Sectors

Metals & MiningPlastics & Rubber

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

Used in 3 sectors as 1 functional role.

•Catalyst in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Catalyst in Synthetic Rubber ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Catalyst in OtherProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS7727-18-6

PubChem CID24410

DTXSIDDTXSID7064784

FormulaCl3H3OV

Mol. Weight176.32 g/mol

SMILESO=[V].Cl.Cl.Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID7064784Retrieved 2026-04-06
PubChem · compound 24410Retrieved 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

Vanadium, trichlorooxo-, (T-4)- (CAS 7727-18-6) https://chemicalindependence.com/chemical/7727-18-6/ EPA CompTox (DSSTox): DTXSID7064784. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7064784 PubChem: 24410. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24410 EPA Chemical Data Reporting: 7727-18-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7727-18-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 282749 for CAS 7727-18-6. Reporting year: 2024. https://usatrade.census.gov/