Dicumyl peroxide

CAS 80-43-3

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$56M

Top sourceChina 47%

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 290960 · basket

EPA reports by year

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

These shares come from HS customs code 290960, which covers 29 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 47%ChinaDE 31%GermanyKR 11%South KoreaBE 8%BelgiumTR 1%Turkey

Malaysia
India
Mexico
Lithuania
Japan
Canada
Italy

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.

United Initiators

EPA-registered importers (4)

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

Borealis Ag · AT Austria

Arkema

Borealis Compounds

Pergan Marshall

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

Used in 3 sectors as 3 functional roles.

•Polymerization promoter in Plastics Material and Resin ManufacturingProcessing as a reactant
•CBI in CBICBI
•Chemical reaction regulator in Rubber Product Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.47/gSigma-Aldrich (Rush Stock)

CountryGermany

Pack$235.70 / 500 g

Purity98%

Vendors2 available

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

1 more vendor

Vendor	Country	$/g	Pack	Purity
Sigma-Aldrich	Germany	$0.47	500 g	98%

Chemical Identity

CAS80-43-3

PubChem CID6641

DTXSIDDTXSID1025017

FormulaC18H22O2

Mol. Weight270.4 g/mol

SMILESCC(C)(C1=CC=CC=C1)OOC(C)(C)C2=CC=CC=C2

Data Sources

EPA CompTox (DSSTox) · DTXSID1025017Retrieved 2026-04-06
PubChem · compound 6641Retrieved 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

← Back to Dashboard ← Back to Plastics & Rubber

Brief citations

Dicumyl peroxide (CAS 80-43-3) https://chemicalindependence.com/chemical/80-43-3/ EPA CompTox (DSSTox): DTXSID1025017. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1025017 PubChem: 6641. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6641 EPA Chemical Data Reporting: 80-43-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 80-43-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290960 for CAS 80-43-3. Reporting year: 2024. https://usatrade.census.gov/