[2,2'-Bi-1H-indole]-3,3'-diol, disodium salt

CAS 894-86-0

EPA’s 2023 records show zero U.S. production of this chemical.

US productionZero

Import value, 2024$1.4B

Import volumeCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

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. 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 Zero · Imports Confidential
2019: US production Not published · Imports Not published

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

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.

Archroma Management Gmbh · CH Switzerland

Archroma U.S

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

•Dye in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS894-86-0

PubChem CID71586

DTXSIDDTXSID3061269

FormulaC16H10N2Na2O2

Mol. Weight308.24 g/mol

SMILESC1=CC=C2C(=C1)C(=C(N2)C3=C(C4=CC=CC=C4N3)[O-])[O-].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID3061269Retrieved 2026-04-06
PubChem · compound 71586Retrieved 2026-04-06
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

[2,2'-Bi-1H-indole]-3,3'-diol, disodium salt (CAS 894-86-0) https://chemicalindependence.com/chemical/894-86-0/ EPA CompTox (DSSTox): DTXSID3061269. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3061269 PubChem: 71586. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/71586 EPA Chemical Data Reporting: 894-86-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 894-86-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293399 for CAS 894-86-0. Reporting year: 2024. https://usatrade.census.gov/