Potassium fluorescein

CAS 6417-85-2

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 volumeZero

Top sourceNo public record

At least one company claimed its 2019 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: 2019.

Where It Comes From

EPA reports by year

2019: US production Confidential · Imports Zero

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Dystar

Why It Matters

Sectors

Textiles

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

•Dyes in Synthetic Dye and Pigment Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$59.00/gA2B Chem LLC

CountryUnited States

Pack$59.00 / 1 g

PurityNot recorded

Vendors4 available

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

3 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$62.00	1 g	—
Angene Chemical	China → Hong Kong	$64.00	1 g	—
AA BLOCKS	United States	$75.00	1 g	—

Chemical Identity

CAS6417-85-2

PubChem CID80878

DTXSIDDTXSID9064348

FormulaC20H10K2O5

Mol. Weight408.5 g/mol

SMILESC1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)[O-])OC5=C3C=CC(=C5)[O-].[K+].[K+]

Data Sources

EPA CompTox (DSSTox) · DTXSID9064348Retrieved 2026-04-06
PubChem · compound 80878Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04

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Brief citations

Potassium fluorescein (CAS 6417-85-2) https://chemicalindependence.com/chemical/6417-85-2/ EPA CompTox (DSSTox): DTXSID9064348. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9064348 PubChem: 80878. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/80878 EPA Chemical Data Reporting: 6417-85-2. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 6417-85-2. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting