Divinylbenzene

CAS 1321-74-0

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$6.2B

Import volumeZero

Top sourceJapan 32%

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 290290, 382499 · basket

EPA reports by year

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

These shares come from HS customs code 290290, 382499, which covers 376 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 32%JapanKR 27%South KoreaDE 8%GermanyCA 6%CanadaCN 4%China

Liechtenstein
Indonesia
Chile
Ireland
Vietnam
Brazil
Austria
Colombia
Israel
Australia
United Arab Emirates
Bosnia and Herzegovina
Turkey
Denmark
South Africa
Philippines
Saudi Arabia
Norway
Czech Republic
Hungary
El Salvador
New Zealand
Slovenia
Morocco
Monaco
Finland
Argentina
Egypt
Oman
Portugal
Slovakia
Qatar
Pakistan
Ukraine
Lebanon
Estonia
Serbia
Costa Rica
Belarus
Hong Kong
Croatia
Luxembourg
Cambodia
Bulgaria
Greece
Uruguay
Romania
Tunisia
Peru
Zimbabwe
Dominican Republic
Georgia
Malta
Sri Lanka
Jamaica
Armenia

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.

Dupont Specialty Products Usa

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

Why It Matters

Sectors

EnergyPlastics & RubberPaints & Coatings

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 3 sectors as 3 functional roles.

•Monomers in Plastics Material and Resin Manufacturing (100%)Processing as a reactant
•Processing aids, specific to petroleum production in Oil and Gas Drilling, Extraction, and Support activities (12%)Processing as a reactant
•Ion exchange agent in Plastics Material and Resin Manufacturing (4%)Processing as a reactant
•Monomers in Paint and Coating Manufacturing (2%)Processing as a reactant

Chemical Identity

CAS1321-74-0

PubChem CIDNot recorded

DTXSIDDTXSID2025216

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID2025216Retrieved 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

Divinylbenzene (CAS 1321-74-0) https://chemicalindependence.com/chemical/1321-74-0/ EPA CompTox (DSSTox): DTXSID2025216. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2025216 EPA Chemical Data Reporting: 1321-74-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1321-74-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290290,382499 for CAS 1321-74-0. Reporting year: 2024. https://usatrade.census.gov/