Diethylbenzene

CAS 25340-17-4

Used in 2 industrial sectors tracked by the EPA.

US production19.9M lb

Import value, 2024$68M

Import volumeCBI

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

Top sourceIndia 35%

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 290290 · basket

EPA reports by year

2023: US production 19.9M lb · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290290, which covers 171 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).

IN 35%IndiaTW 11%TaiwanES 10%SpainDE 10%GermanyCN 8%China

Czech Republic
Netherlands
Switzerland
Pakistan
United Kingdom
Austria
Denmark
Indonesia
Lithuania
Hong Kong
Finland

EPA-registered manufacturers (1)

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

Americas Styrenics

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.

Deltech Monomers Bidco Holdings

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.

Aceto Us

Why It Matters

Sectors

Metals & MiningCore 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 4 sectors as 3 functional roles.

•Intermediate in Miscellaneous Manufacturing (100%)Processing as a reactant
•Monomers in All Other Chemical Product and Preparation Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
•Fuel agents in Other (1%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in All Other Basic Organic Chemical Manufacturing (99%)Processing as a reactant

Chemical Identity

CAS25340-17-4

PubChem CIDNot recorded

DTXSIDDTXSID4027866

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID4027866Retrieved 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

Diethylbenzene (CAS 25340-17-4) https://chemicalindependence.com/chemical/25340-17-4/ EPA CompTox (DSSTox): DTXSID4027866. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4027866 EPA Chemical Data Reporting: 25340-17-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 25340-17-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290290 for CAS 25340-17-4. Reporting year: 2024. https://usatrade.census.gov/