Diisobutyl maleate

CAS 14234-82-3

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$139M

Import volumeZero

Top sourceChina 67%

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. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291719 · basket

EPA reports by year

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

These shares come from HS customs code 291719, which covers 176 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 67%ChinaCA 13%CanadaAT 4%AustriaIN 4%IndiaJP 4%Japan

Taiwan
Netherlands
Switzerland
Mexico
South Africa
Denmark
Malaysia
Ukraine
Colombia
Hong Kong
Slovakia

EPA-registered manufacturers (2)

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

Syensqo Sa · BE Belgium

Solvay

Domestic parents -- activity not disclosed (1)

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

Dystar

Why It Matters

Sectors

TextilesCore 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

Used in 2 sectors as 1 functional role.

•Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
•Intermediate in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS14234-82-3

PubChem CID5369200

DTXSIDDTXSID9065734

FormulaC12H20O4

Mol. Weight228.28 g/mol

SMILESCC(C)COC(=O)C=CC(=O)OCC(C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID9065734Retrieved 2026-04-06
PubChem · compound 5369200Retrieved 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

Diisobutyl maleate (CAS 14234-82-3) https://chemicalindependence.com/chemical/14234-82-3/ EPA CompTox (DSSTox): DTXSID9065734. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9065734 PubChem: 5369200. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/5369200 EPA Chemical Data Reporting: 14234-82-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 14234-82-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291719 for CAS 14234-82-3. Reporting year: 2024. https://usatrade.census.gov/