Thionyl chloride

CAS 7719-09-7

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

US productionCBI

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

Import value, 2024$2M

Top sourceGermany 84%

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.

Where It Comes From

Customs basis: HS 281217 · exact

EPA reports by year

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

Source Countries

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

DE 84%GermanyCH 12%SwitzerlandIN 2%IndiaSE 2%SwedenCA 1%Canada

Domestic parents -- activity not disclosed (2)

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

Cirba Solutions

W. R. Grace & Co. - Conn.

EPA-registered importers (5)

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

Bayer Ag · DE Germany

Bayer Us Holding

Brenntag

Colonial Group

Lanxess

Why It Matters

Sectors

HealthAgriculturePlastics & 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.

•Intermediate in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing as a reactant
•Intermediate in Plastics Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Pharmaceutical and Medicine Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS7719-09-7

PubChem CID24386

DTXSIDDTXSID3064778

FormulaCl2OS

Mol. Weight118.97 g/mol

SMILESO=S(Cl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID3064778Retrieved 2026-04-06
PubChem · compound 24386Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Thionyl chloride (CAS 7719-09-7) https://chemicalindependence.com/chemical/7719-09-7/ EPA CompTox (DSSTox): DTXSID3064778. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3064778 PubChem: 24386. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24386 EPA Chemical Data Reporting: 7719-09-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7719-09-7. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 281217 for CAS 7719-09-7. Reporting year: 2024. https://usatrade.census.gov/