C.I. Acid Blue 9

CAS 2650-18-2

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

Molecular structure of 2650-18-2 — 2 NH₄⁺

US productionCBI

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

Import value, 2024$56M

Top sourceIndia 70%

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 320412 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Zero · Imports 47.9K lb

These shares come from HS customs code 320412, which covers 106 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 70%IndiaMY 7%MalaysiaCH 4%SwitzerlandCN 4%ChinaDE 3%Germany

Ireland
United Kingdom
Spain
South Korea
Denmark
Pakistan
Hong Kong
Czech Republic
Brazil
Turkey

EPA-registered importers (1)

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

Target

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

Vendor Pricing

$1.10/gAngene Chemical

CountryChina (registered: Hong Kong)

Pack$552.00 / 500 g

PurityNot recorded

Vendors8 available

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

7 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$10.30	250 g	—
AK Scientific, Inc.	United States	$307.00	1 g	90%
A2B Chem LLC	United States	$331.00	1 g	90%
AA BLOCKS	United States	$342.00	1 g	90%
Angene International Limited	United States	$507.00	1 g	90%
MedKoo Biosciences, Inc	United States	$850.00	1 g	98%
Angene	China → Hong Kong	$4266.67	30 mg	—

Chemical Identity

CAS2650-18-2

PubChem CID17559

DTXSIDDTXSID4034310

FormulaC37H42N4O9S3

Mol. Weight783 g/mol

SMILESCCN(CC1=CC(=CC=C1)S(=O)(=O)[O-])C2=CC=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC(=CC=C4)S(=O)(=O)[O-])C=C3)C5=CC=CC=C5S(=O)(=O)[O-].[NH4+].[NH4+]

Data Sources

EPA CompTox (DSSTox) · DTXSID4034310Retrieved 2026-04-06
PubChem · compound 17559Retrieved 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. Acid Blue 9 (CAS 2650-18-2) https://chemicalindependence.com/chemical/2650-18-2/ EPA CompTox (DSSTox): DTXSID4034310. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4034310 PubChem: 17559. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/17559 EPA Chemical Data Reporting: 2650-18-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 2650-18-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320412 for CAS 2650-18-2. Reporting year: 2024. https://usatrade.census.gov/