Tetrachlorophthalic anhydride

CAS 117-08-8

EPA’s 2023 records show zero U.S. production of this chemical.

US productionZero

Import value, 2024$316M

Import volumeCBI

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

Top sourceSouth Korea 19%

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. 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 291739 · basket

EPA reports by year

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

These shares come from HS customs code 291739, which covers 103 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).

KR 19%South KoreaCN 19%ChinaIN 18%IndiaES 13%SpainCA 9%Canada

Netherlands
Malaysia
Colombia
Switzerland
Turkey
Germany
Peru
Brazil
Sweden
Belgium
Denmark
Czech Republic
Ukraine
Hong Kong

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.

Teknor Apex

Wego Chemical Group

Why It Matters

Sectors

Core Chemicals

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 All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.05/gA2B Chem LLC

CountryUnited States

Pack$24.00 / 500 g

Purity95%

Vendors14 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

13 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.06	500 g	98%
ALFA AESAR	Germany	$0.13	10 kg	98%
AK Scientific Specialized	United States	$0.22	500 g	95%
Apollo Scientific UK	United Kingdom	$0.24	1 kg	97%
Combi-Blocks, Inc.	United States	$0.25	1 kg	98%
AK Scientific, Inc.	United States	$0.30	500 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$0.35	500 g	96%
Sigma-Aldrich	Germany	$0.35	500 g	96%
Vitas M Chemical Limited	Hong Kong	$310.00	1 g	90%
Otava, Ltd.	Ukraine	$460.00	250 mg	95%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
ChemDiv, Inc.	United States	$4070.00	100 mg	90%
TimTec, LLC (back-ordered)	United States	$32000.00	15 mg	94%

Chemical Identity

CAS117-08-8

PubChem CID8326

DTXSIDDTXSID7026102

FormulaC8Cl4O3

Mol. Weight285.9 g/mol

SMILESC12=C(C(=C(C(=C1Cl)Cl)Cl)Cl)C(=O)OC2=O

Data Sources

EPA CompTox (DSSTox) · DTXSID7026102Retrieved 2026-04-06
PubChem · compound 8326Retrieved 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

Tetrachlorophthalic anhydride (CAS 117-08-8) https://chemicalindependence.com/chemical/117-08-8/ EPA CompTox (DSSTox): DTXSID7026102. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7026102 PubChem: 8326. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/8326 EPA Chemical Data Reporting: 117-08-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 117-08-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291739 for CAS 117-08-8. Reporting year: 2024. https://usatrade.census.gov/