4-Chlorobenzenesulphonic acid

CAS 98-66-8

Used in 1 industrial sector tracked by the EPA.

US production36.9K lb

Import volumeZero

Import dependency0%

Top sourceNo public record

Production is reported production, not a complete census of factories. Production reporting year: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290499 · basket

EPA reports by year

2019: US production 36.9K lb · Imports Zero

HS customs code 290499 covers 112 tracked chemicals in total. US Census does not break out this chemical's share, so the country-of-origin mix is not available. EPA CDR reports import dependency at the chemical level separately, shown above.

EPA-registered manufacturers (1)

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

Arichem

Why It Matters

Sectors

Core Chemicals

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

Vendor Pricing

$0.02/gAaron Chemicals LLC

CountryHong Kong

Pack$10.00 / 500 g

Purity97%

Vendors14 available

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

13 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.03	500 g	97%
A2B Chem LLC	United States	$0.05	500 g	97%
AA BLOCKS	United States	$0.06	500 g	97%
Chemscene	United States	$0.06	500 g	—
Ambeed, Inc.	United States	$0.21	100 g	98%
Combi-Blocks, Inc.	United States	$0.25	1 kg	98%
AK Scientific, Inc.	United States	$2.68	25 g	95%
AstaTech, Inc	United States	$5.80	25 g	95%
Vitas M Chemical Limited	Hong Kong	$225.00	1 g	90%
Specs	Netherlands	$1694.00	20 mg	90%
Otava, Ltd.	Ukraine	$2280.00	50 mg	95%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	97%

Chemical Identity

CAS98-66-8

PubChem CID7400

DTXSIDDTXSID7044473

FormulaC6H5ClO3S

Mol. Weight192.62 g/mol

SMILESC1=CC(=CC=C1S(=O)(=O)O)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID7044473Retrieved 2026-04-06
PubChem · compound 7400Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04

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Brief citations

4-Chlorobenzenesulphonic acid (CAS 98-66-8) https://chemicalindependence.com/chemical/98-66-8/ EPA CompTox (DSSTox): DTXSID7044473. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7044473 PubChem: 7400. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/7400 EPA Chemical Data Reporting: 98-66-8. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 98-66-8. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting