Tar bases, quinoline derivs.

CAS 68513-87-1

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$35M

Top sourceSouth Africa 72%

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 270799 · basket

EPA reports by year

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

These shares come from HS customs code 270799, which covers 26 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).

ZA 72%South AfricaCA 11%CanadaES 6%SpainNL 3%NetherlandsIT 2%Italy

Sweden
Israel
China
India
Belgium

Why It Matters

Sectors

Energy

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 1 sector as 2 functional roles.

•Processing aids, specific to petroleum production in Oil and Gas Drilling, Extraction, and Support activities (100%)Processing—incorporation into formulation, mixture, or reaction product
•Surface active agents in Oil and Gas Drilling, Extraction, and Support activities (100%)Processing as a reactant

Chemical Identity

CAS68513-87-1

PubChem CIDNot recorded

DTXSIDDTXSID9099167

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID9099167Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Tar bases, quinoline derivs. (CAS 68513-87-1) https://chemicalindependence.com/chemical/68513-87-1/ EPA CompTox (DSSTox): DTXSID9099167. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9099167 EPA Chemical Data Reporting: 68513-87-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 68513-87-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 270799 for CAS 68513-87-1. Reporting year: 2024. https://usatrade.census.gov/