Toluene-2,4-dimaleimide

CAS 6422-83-9

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$43M

Top sourceJapan 25%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 292519 · basket

EPA reports by year

2019: US production Confidential · Imports Confidential

These shares come from HS customs code 292519, which covers 43 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).

JP 25%JapanCN 21%ChinaGB 21%United KingdomAT 14%AustriaDE 7%Germany

Australia
Belgium
Israel
Switzerland
Hungary
Ukraine
Slovakia
Singapore

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.

Evonik

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

•Intermediate in Plastics Material and Resin Manufacturing (100%)Processing as a reactant

Vendor Pricing

$28.00/gAaron Chemicals LLC

CountryHong Kong

Pack$140.00 / 5 g

Purity95%

Vendors9 available

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

8 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$29.00	5 g	95%
A2B Chem LLC (2 weeks)	United States	$35.00	5 g	95%
AA BLOCKS (2 weeks)	United States	$36.80	5 g	95%
AstaTech (2 weeks)	United States	$43.80	5 g	95%
Maybridge, Ltd.	United Kingdom	$2414.30	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	95%
Asinex	Netherlands	$9292.80	50 mg	90%
TimTec, LLC (back-ordered)	United States	$32000.00	15 mg	94%

Chemical Identity

CAS6422-83-9

PubChem CID80893

DTXSIDDTXSID6052326

FormulaC15H10N2O4

Mol. Weight282.25 g/mol

SMILESCC1=C(C=C(C=C1)N2C(=O)C=CC2=O)N3C(=O)C=CC3=O

Data Sources

EPA CompTox (DSSTox) · DTXSID6052326Retrieved 2026-04-06
PubChem · compound 80893Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · 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

Toluene-2,4-dimaleimide (CAS 6422-83-9) https://chemicalindependence.com/chemical/6422-83-9/ EPA CompTox (DSSTox): DTXSID6052326. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6052326 PubChem: 80893. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/80893 EPA Chemical Data Reporting: 6422-83-9. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 6422-83-9. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292519 for CAS 6422-83-9. Reporting year: 2024. https://usatrade.census.gov/