Butanedioic acid, 2-[[bis[(2-ethylhexyl)oxy]phosphinothioyl]thio]-, 1,4-dibutyl ester

CAS 68413-48-9

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$760M

Top sourceChina 33%

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 293090 · basket

EPA reports by year

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

These shares come from HS customs code 293090, which covers 418 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 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India

Israel
Croatia
Ukraine
Slovakia
United Arab Emirates
Ireland
Poland
Lithuania
Brazil
Singapore
Australia
Armenia
Hong Kong
Vietnam
Czech Republic
Hungary
Greece
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.

Vanderbilt Chemicals

EPA-registered importers (2)

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

King Industries

Lanxess

Why It Matters

Sectors

EnergyCore 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 2 sectors as 1 functional role.

•Lubricating agent in All Other Basic Organic Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Lubricating agent in Petroleum Lubricating Oil and Grease ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS68413-48-9

PubChem CID109347

DTXSIDDTXSID10867606

FormulaC28H55O6PS2

Mol. Weight582.8 g/mol

SMILESCCCCC(CC)COP(=S)(OCC(CC)CCCC)SC(CC(=O)OCCCC)C(=O)OCCCC

Data Sources

EPA CompTox (DSSTox) · DTXSID10867606Retrieved 2026-04-06
PubChem · compound 109347Retrieved 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

Butanedioic acid, 2-[[bis[(2-ethylhexyl)oxy]phosphinothioyl]thio]-, 1,4-dibutyl ester (CAS 68413-48-9) https://chemicalindependence.com/chemical/68413-48-9/ EPA CompTox (DSSTox): DTXSID10867606. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID10867606 PubChem: 109347. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/109347 EPA Chemical Data Reporting: 68413-48-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 68413-48-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293090 for CAS 68413-48-9. Reporting year: 2024. https://usatrade.census.gov/