Chlorendic anhydride

CAS 115-27-5

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import value, 2024$37M

Import volume680.0K lb

Import dependency100%

Top sourceChina 25%

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.

Chlorendic anhydride · US import value by year

2013: $37M · Peak 2014: $42M · 2024: $37M · 2025: $31M

Where It Comes From

Customs basis: HS 291720 · basket

EPA reports by year

2023: US production Zero · Imports 680.0K lb
2019: US production Zero · Imports 760.0K lb

These shares come from HS customs code 291720, which covers 42 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 25%ChinaIT 21%ItalyJP 21%JapanDE 14%GermanyIN 9%India

Ukraine
South Africa
Malaysia
Netherlands
Mexico
United Kingdom
Switzerland
Latvia
Canada

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.

Velsicol Chemical

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

•Flame retardant in OtherProcessing—repackaging

Vendor Pricing

$0.06/gAaron Chemicals LLC

CountryHong Kong

Pack$28.00 / 500 g

PurityNot recorded

Vendors11 available

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

10 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.06	500 g	—
A2B Chem LLC	United States	$0.09	250 g	95%
AA BLOCKS	United States	$0.10	1 kg	95%
Ambeed, Inc.	United States	$0.13	500 g	98%
Angene International Limited	United States	$0.23	500 g	97%
ChemDiv, Inc.	United States	$18.00	50 g	90%
Labotest KG	Germany	$217.80	5000 mg	90%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Vitas M Chemical Limited	Hong Kong	$3170.00	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	—

Chemical Identity

CAS115-27-5

PubChem CID8265

DTXSIDDTXSID2026941

FormulaC9H2Cl6O3

Mol. Weight370.8 g/mol

SMILESC12C(C(=O)OC1=O)C3(C(=C(C2(C3(Cl)Cl)Cl)Cl)Cl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID2026941Retrieved 2026-04-06
PubChem · compound 8265Retrieved 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

Chlorendic anhydride (CAS 115-27-5) https://chemicalindependence.com/chemical/115-27-5/ EPA CompTox (DSSTox): DTXSID2026941. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2026941 PubChem: 8265. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/8265 EPA Chemical Data Reporting: 115-27-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 115-27-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291720 for CAS 115-27-5. Reporting year: 2024. https://usatrade.census.gov/