2-{[3,3-Bis(3-tert-butyl-4-hydroxyphenyl)butanoyl]oxy}ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)-3-(3-tert-butyl-4-hydroxyphenyl)butanoate

CAS 32509-66-3

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import value, 2024$122M

Import volume19.1K lb

Import dependency100%

Top sourceSouth Korea 39%

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

2-{[3,3-Bis(3-tert-butyl-4-hydroxyphenyl)butanoyl]oxy}ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)-3-(3-tert-butyl-4-hydroxyphenyl)butanoate · US import value by year

2013: $123M · Peak 2022: $151M · 2024: $122M · 2025: $128M

Where It Comes From

Customs basis: HS 291829 · basket

EPA reports by year

2023: US production Zero · Imports 19.1K lb
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 291829, which covers 85 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).

KR 39%South KoreaCN 26%ChinaTW 11%TaiwanJP 9%JapanSG 5%Singapore

United Kingdom
Germany
Malaysia
Mexico
Ireland
Ukraine
Slovakia
Hungary
Spain

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.

Clariant International · CH Switzerland

Clariant

Why It Matters

Sectors

ConstructionPlastics & RubberPaints & Coatings

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 1 functional role.

•Lubricating agent in Paint and Coating Manufacturing (12%)Processing—incorporation into formulation, mixture, or reaction product
•Lubricating agent in Plastics Material and Resin Manufacturing (87%)Processing—incorporation into formulation, mixture, or reaction product
•Lubricating agent in Plastics Product Manufacturing (87%)Processing—incorporation into article
•Lubricating agent in Construction (1%)Processing—incorporation into article

Chemical Identity

CAS32509-66-3

PubChem CID122891

DTXSIDDTXSID9052006

FormulaC50H66O8

Mol. Weight795.1 g/mol

SMILESCC(C)(C)C1=C(C=CC(=C1)C(C)(CC(=O)OCCOC(=O)CC(C)(C2=CC(=C(C=C2)O)C(C)(C)C)C3=CC(=C(C=C3)O)C(C)(C)C)C4=CC(=C(C=C4)O)C(C)(C)C)O

Data Sources

EPA CompTox (DSSTox) · DTXSID9052006Retrieved 2026-04-06
PubChem · compound 122891Retrieved 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

2-{[3,3-Bis(3-tert-butyl-4-hydroxyphenyl)butanoyl]oxy}ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)-3-(3-tert-butyl-4-hydroxyphenyl)butanoate (CAS 32509-66-3) https://chemicalindependence.com/chemical/32509-66-3/ EPA CompTox (DSSTox): DTXSID9052006. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9052006 PubChem: 122891. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/122891 EPA Chemical Data Reporting: 32509-66-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 32509-66-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291829 for CAS 32509-66-3. Reporting year: 2024. https://usatrade.census.gov/