Butyl 4,4-di(tert-butylperoxy)valerate

CAS 995-33-5

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$370M

Top sourceIndia 45%

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 291899 · basket

EPA reports by year

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

These shares come from HS customs code 291899, which covers 139 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 45%IndiaCN 35%ChinaGB 7%United KingdomCO 3%ColombiaCH 3%Switzerland

Austria
Hungary
South Korea
Taiwan
Czech Republic
Mexico
Spain
Ukraine
Estonia
Australia
Israel
Singapore
Slovakia
Russia

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.

Pergan Marshall

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 3 sectors as 3 functional roles.

•Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
•Hardener in Rubber Product ManufacturingProcessing as a reactant
•CBI in CBICBI

Vendor Pricing

$75.60/gA2B Chem LLC (1 week)

CountryUnited States

Pack$756.00 / 10 g

Purity95%

Vendors2 available

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

1 more vendor

Vendor	Country	$/g	Pack	Purity
AA BLOCKS (1 week)	United States	$80.00	10 g	95%

Chemical Identity

CAS995-33-5

PubChem CID70447

DTXSIDDTXSID1061366

FormulaC17H34O6

Mol. Weight334.4 g/mol

SMILESCCCCOC(=O)CCC(C)(OOC(C)(C)C)OOC(C)(C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID1061366Retrieved 2026-04-06
PubChem · compound 70447Retrieved 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

Butyl 4,4-di(tert-butylperoxy)valerate (CAS 995-33-5) https://chemicalindependence.com/chemical/995-33-5/ EPA CompTox (DSSTox): DTXSID1061366. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1061366 PubChem: 70447. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/70447 EPA Chemical Data Reporting: 995-33-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 995-33-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291899 for CAS 995-33-5. Reporting year: 2024. https://usatrade.census.gov/