1,1-Dimethylpropyl hydroperoxide

CAS 3425-61-4

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.

Pergan Marshall

EPA-registered importers (3)

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

United Initiators Gmbh · DE Germany

Arkema

United Initiators

Why It Matters

Sectors

Plastics & RubberCore 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 5 functional roles.

•Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
•Chemical reaction regulator in Plastics Material and Resin ManufacturingProcessing as a reactant
•CBI in CBICBI
•Oxidizing agent in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
•Plasticizer in Plastics Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS3425-61-4

PubChem CID76962

DTXSIDDTXSID6029256

FormulaC5H12O2

Mol. Weight104.15 g/mol

SMILESCCC(C)(C)OO

Data Sources

EPA CompTox (DSSTox) · DTXSID6029256Retrieved 2026-04-06
PubChem · compound 76962Retrieved 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

1,1-Dimethylpropyl hydroperoxide (CAS 3425-61-4) https://chemicalindependence.com/chemical/3425-61-4/ EPA CompTox (DSSTox): DTXSID6029256. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6029256 PubChem: 76962. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/76962 EPA Chemical Data Reporting: 3425-61-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3425-61-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290960 for CAS 3425-61-4. Reporting year: 2024. https://usatrade.census.gov/