Peroxide, 1,1-dimethylethyl 1-methyl-1-phenylethyl

CAS 3457-61-2

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

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.

Arkema

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 2 sectors as 2 functional roles.

•CBI in CBICBI
•Chemical reaction regulator in Rubber Product Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS3457-61-2

PubChem CID76997

DTXSIDDTXSID9063039

FormulaC13H20O2

Mol. Weight208.3 g/mol

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

Data Sources

EPA CompTox (DSSTox) · DTXSID9063039Retrieved 2026-04-06
PubChem · compound 76997Retrieved 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

Peroxide, 1,1-dimethylethyl 1-methyl-1-phenylethyl (CAS 3457-61-2) https://chemicalindependence.com/chemical/3457-61-2/ EPA CompTox (DSSTox): DTXSID9063039. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9063039 PubChem: 76997. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/76997 EPA Chemical Data Reporting: 3457-61-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3457-61-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290960 for CAS 3457-61-2. Reporting year: 2024. https://usatrade.census.gov/