2-Amino-5-methylbenzenesulfonic acid

CAS 88-44-8

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 value, 2024$59M

Top sourceGermany 55%

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 292143 · basket

EPA reports by year

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

These shares come from HS customs code 292143, which covers 45 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).

DE 55%GermanyIT 30%ItalyIN 11%IndiaJP 2%JapanCN 1%China

South Korea
United Kingdom
Taiwan

Domestic parents -- activity not disclosed (1)

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

Aceto Us

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.

Sumitomo · JP Japan

Sumitomo Corporation Of Americas

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

Used in 1 sector as 2 functional roles.

•Pigment in Synthetic Dye and Pigment ManufacturingProcessing as a reactant
•Intermediate in Synthetic Dye and Pigment Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.02/gAaron Chemicals LLC

CountryHong Kong

Pack$10.00 / 500 g

Purity98%

Vendors18 available

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

17 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.02	500 g	98%
BLD Pharmatech Ltd.	China	$0.04	1 kg	98%
A2B Chem LLC	United States	$0.04	500 g	98%
AA BLOCKS	United States	$0.05	500 g	98%
BLD Pharmatech GmbH	Germany	$0.06	500 g	98%
BLD Pharmatech Co., Limited	United States	$0.13	500 g	98%
Ambeed, Inc.	United States	$0.13	500 g	98%
Combi-Blocks, Inc.	United States	$0.25	1 kg	98%
Sigma-Aldrich (Rush Stock)	Germany	$0.26	250 g	—
Sigma-Aldrich	Germany	$0.26	250 g	—
ALFA AESAR	Germany	$0.29	250 g	99%
AK Scientific Specialized	United States	$0.50	100 g	95%
AK Scientific, Inc.	United States	$0.70	100 g	98%
Angene International Limited	United States	$2.68	25 g	95%
Specs	Netherlands	$804.65	1 g	90%
Key Organics Ltd.	United Kingdom	$1960.00	100 mg	95%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS88-44-8

PubChem CID6934

DTXSIDDTXSID7026526

FormulaC7H9NO3S

Mol. Weight187.22 g/mol

SMILESCC1=CC(=C(C=C1)N)S(=O)(=O)O

Data Sources

EPA CompTox (DSSTox) · DTXSID7026526Retrieved 2026-04-06
PubChem · compound 6934Retrieved 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-Amino-5-methylbenzenesulfonic acid (CAS 88-44-8) https://chemicalindependence.com/chemical/88-44-8/ EPA CompTox (DSSTox): DTXSID7026526. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7026526 PubChem: 6934. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6934 EPA Chemical Data Reporting: 88-44-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 88-44-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292143 for CAS 88-44-8. Reporting year: 2024. https://usatrade.census.gov/