2-Aminobenzene-1,4-disulfonic acid

CAS 98-44-2

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

US productionZero

Import value, 2024$30M

Import volumeCBI

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

Top sourceChina 49%

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 292142 · basket

EPA reports by year

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

These shares come from HS customs code 292142, which covers 67 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).

CN 49%ChinaIN 34%IndiaDE 6%GermanyCA 4%CanadaKR 3%South Korea

United Kingdom
Switzerland

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.

Liberty Specialty Chemicals

Why It Matters

Sectors

Paper & 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

•Brightener in Paper ManufacturingProcessing as a reactant

Vendor Pricing

$1.20/gCombi-Blocks, Inc.

CountryUnited States

Pack$600.00 / 500 g

Purity97%

Vendors12 available

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

11 more vendors

Vendor	Country	$/g	Pack	Purity
A2B Chem LLC	United States	$1.28	500 g	97%
AA BLOCKS	United States	$1.35	500 g	97%
AK Scientific Specialized	United States	$1.75	100 g	95%
AK Scientific, Inc.	United States	$2.45	100 g	97%
Aaron Chemicals LLC	Hong Kong	$2.51	500 g	95%
Angene International Limited	United States	$4.12	100 g	97%
Angene Chemical	China → Hong Kong	$5.12	25 g	95%
ALFA AESAR	Germany	$13.51	5 g	95%
Otava, Ltd.	Ukraine	$229.00	1 g	95%
Labotest KG	Germany	$453.00	1000 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS98-44-2

PubChem CID60988

DTXSIDDTXSID8044751

FormulaC6H7NO6S2

Mol. Weight253.3 g/mol

SMILESC1=CC(=C(C=C1S(=O)(=O)O)N)S(=O)(=O)O

Data Sources

EPA CompTox (DSSTox) · DTXSID8044751Retrieved 2026-04-06
PubChem · compound 60988Retrieved 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-Aminobenzene-1,4-disulfonic acid (CAS 98-44-2) https://chemicalindependence.com/chemical/98-44-2/ EPA CompTox (DSSTox): DTXSID8044751. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8044751 PubChem: 60988. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/60988 EPA Chemical Data Reporting: 98-44-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 98-44-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292142 for CAS 98-44-2. Reporting year: 2024. https://usatrade.census.gov/