C.I. Reactive black 5

CAS 17095-24-8

U.S. production volumes are classified as confidential business information.

Molecular structure of 17095-24-8 — 4 Na⁺

US productionCBI

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

Import value, 2024$14M

Top sourceIndia 63%

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 320416 · basket

EPA reports by year

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

These shares come from HS customs code 320416, which covers 9 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).

IN 63%IndiaKR 12%South KoreaCN 9%ChinaMY 5%MalaysiaTW 4%Taiwan

Germany
Canada
Argentina
United Kingdom
Hong Kong
Italy
Singapore
Finland

Domestic parents -- activity not disclosed (2)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Dystar

Everlight Usa

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 manufacturingProcessing—incorporation into article

Vendor Pricing

$0.36/gAaron Chemicals LLC

CountryHong Kong

Pack$180.00 / 500 g

Purity80%

Vendors4 available

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

3 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.50	500 g	50%
Sigma-Aldrich (Rush Stock)	Germany	$1.53	100 g	—
Sigma-Aldrich	Germany	$1.53	100 g	—

Chemical Identity

CAS17095-24-8

PubChem CID135442967

DTXSIDDTXSID4027787

FormulaC26H21N5Na4O19S6

Mol. Weight991.8 g/mol

SMILESC1=CC(=CC=C1N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=C(C=C4)S(=O)(=O)CCOS(=O)(=O)[O-])N)O)S(=O)(=O)CCOS(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID4027787Retrieved 2026-04-06
PubChem · compound 135442967Retrieved 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

C.I. Reactive black 5 (CAS 17095-24-8) https://chemicalindependence.com/chemical/17095-24-8/ EPA CompTox (DSSTox): DTXSID4027787. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4027787 PubChem: 135442967. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/135442967 EPA Chemical Data Reporting: 17095-24-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 17095-24-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320416 for CAS 17095-24-8. Reporting year: 2024. https://usatrade.census.gov/