8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3′,2′-m]triphenodioxazine

CAS 6358-30-1

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.

Top sourceNo public record

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.

Where It Comes From

EPA reports by year

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

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.

Flint Group Packaging Inks North America Holdings

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.

Pigments Services

Target

Why It Matters

Sectors

Plastics & RubberTextilesPaints & 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 5 sectors as 1 functional role.

•Pigment in Printing Ink ManufacturingProcessing—repackaging
•Pigment in Printing and Related Support ActivitiesProcessing—incorporation into formulation, mixture, or reaction product
•Pigment in Paint and Coating Manufacturing (80%)Processing—incorporation into formulation, mixture, or reaction product
•Pigment in Custom Compounding of Purchased Resins (20%)Processing—incorporation into formulation, mixture, or reaction product
•Pigment in Synthetic Dye and Pigment Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.70/gAaron Chemicals LLC

CountryHong Kong

Pack$352.00 / 500 g

Purity95%

Vendors8 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

7 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.76	500 g	—
Combi-Blocks, Inc.	United States	$3.40	500 g	95%
AstaTech, Inc	United States	$7.12	25 g	0%
A2B Chem LLC	United States	$8.12	25 g	—
AA BLOCKS	United States	$8.92	25 g	—
Angene International Limited	United States	$13.76	25 g	—
Angene	China → Hong Kong	$4266.67	30 mg	—

Chemical Identity

CAS6358-30-1

PubChem CID61387

DTXSIDDTXSID2036293

FormulaC34H22Cl2N4O2

Mol. Weight589.5 g/mol

SMILESCCN1C2=CC=CC=C2C3=CC4=C(C=C31)OC5=C(C6=NC7=C(C=C8C(=C7)C9=CC=CC=C9N8CC)OC6=C(C5=N4)Cl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID2036293Retrieved 2026-04-06
PubChem · compound 61387Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3′,2′-m]triphenodioxazine (CAS 6358-30-1) https://chemicalindependence.com/chemical/6358-30-1/ EPA CompTox (DSSTox): DTXSID2036293. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2036293 PubChem: 61387. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/61387 EPA Chemical Data Reporting: 6358-30-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 6358-30-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting