Quino[2,3-b]acridine-7,14-dione, dichloro-5,12-dihydro-

CAS 38720-66-0

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$1.4B

Import volumeZero

Top sourceIreland 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 293399 · basket

EPA reports by year

2023: US production Confidential · Imports Zero

These shares come from HS customs code 293399, which covers 518 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).

IE 33%IrelandCN 26%ChinaIN 11%IndiaDE 9%GermanyIT 4%Italy

Taiwan
Poland
Canada
Ivory Coast
Greece
Hungary
Indonesia
Latvia
Belgium
Slovakia
Czech Republic
Austria
Netherlands
Finland
Denmark
Croatia
Australia
South Africa
Sweden
Hong Kong
Malta
Singapore
Lithuania
Malaysia
Oman
Serbia

Why It Matters

Sectors

Plastics & RubberPaints & CoatingsPaper & Printing

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 1 functional role.

•Pigment in Paint and Coating Manufacturing (40%)Processing—incorporation into formulation, mixture, or reaction product
•Pigment in Printing Ink Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
•Pigment in Plastics Material and Resin Manufacturing (40%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS38720-66-0

PubChem CIDNot recorded

DTXSIDDTXSID10959535

FormulaC20H11ClN2O2

Mol. Weight346.77 g/mol

SMILESNot recorded

Data Sources

EPA TSCA InventoryRetrieved 2026-04-29
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

Quino[2,3-b]acridine-7,14-dione, dichloro-5,12-dihydro- (CAS 38720-66-0) https://chemicalindependence.com/chemical/38720-66-0/ EPA TSCA Inventory: CAS 38720-66-0. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 38720-66-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 38720-66-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293399 for CAS 38720-66-0. Reporting year: 2024. https://usatrade.census.gov/