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Dibutyl tetrachlorophthalate

CAS 3015-66-5

1,2-Benzenedicarboxylic acid, 3,4,5,6-tetrachloro-, 1,2-dibutyl ester

Molecular structure of 3015-66-5
US productionNot reported
Import value, 2024$316M
Top sourceSouth Korea 19%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

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

Where It Comes From

Customs basis: HS 291739 · basket

These shares come from HS customs code 291739, which covers 103 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
KR 19%South KoreaCN 19%ChinaIN 18%IndiaES 13%SpainCA 9%Canada

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS3015-66-5
PubChem CIDNot recorded
DTXSIDDTXSID3062788
FormulaC16H18Cl4O4
Mol. Weight416.12 g/mol
SMILESCCCCOC(=O)C1=C(C(=O)OCCCC)C(Cl)=C(Cl)C(Cl)=C1Cl

Data Sources

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Brief citations

Dibutyl tetrachlorophthalate (CAS 3015-66-5) https://chemicalindependence.com/chemical/3015-66-5/ EPA TSCA Inventory: CAS 3015-66-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 291739 for CAS 3015-66-5. Reporting year: 2024. https://usatrade.census.gov/