Benzeneacetic acid, α,α-dichloro-, ethyl ester

CAS 5317-66-8

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

US productionZero

Import value, 2024$84M

Import volumeCBI

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

Top sourceChina 63%

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 291639 · basket

EPA reports by year

2023: US production Zero · Imports Confidential
2019: US production Zero · Imports 22.9K lb

These shares come from HS customs code 291639, which covers 229 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 63%ChinaIT 19%ItalyIN 8%IndiaDE 4%GermanyCH 3%Switzerland

Spain
Ukraine
Singapore
Turkey
Norway
Czech Republic
Taiwan
South Korea
Japan
Mexico
New Zealand
Canada
Sweden
Hong Kong
Latvia

EPA-registered importers (1)

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

Lion Copolymer Holdings

Why It Matters

Sectors

Plastics & 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

•Polymerization promoter in Synthetic Rubber ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$311.40/gA2B Chem LLC (2 weeks)

CountryUnited States

Pack$1557.00 / 5 g

Purity95%

Vendors5 available

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

4 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$582.00	1 g	95%
Angene Chemical	China → Hong Kong	$586.00	1 g	95%
AstaTech (2 weeks)	United States	$658.00	1 g	95%
AA BLOCKS (2 weeks)	United States	$714.00	1 g	95%

Chemical Identity

CAS5317-66-8

PubChem CID79209

DTXSIDDTXSID8074605

FormulaC10H10Cl2O2

Mol. Weight233.09 g/mol

SMILESCCOC(=O)C(C1=CC=CC=C1)(Cl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID8074605Retrieved 2026-04-06
PubChem · compound 79209Retrieved 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

Benzeneacetic acid, α,α-dichloro-, ethyl ester (CAS 5317-66-8) https://chemicalindependence.com/chemical/5317-66-8/ EPA CompTox (DSSTox): DTXSID8074605. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8074605 PubChem: 79209. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/79209 EPA Chemical Data Reporting: 5317-66-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 5317-66-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291639 for CAS 5317-66-8. Reporting year: 2024. https://usatrade.census.gov/