4-Hydroxyphenylsulfonic acid

CAS 98-67-9

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$11M

Top sourceIndia 78%

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 290899 · basket

EPA reports by year

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

These shares come from HS customs code 290899, which covers 60 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 78%IndiaCN 19%ChinaJP 1%JapanAE 1%United Arab Emirates

Italy
Hungary
Germany
Netherlands
Canada
Mexico

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.

Capital Resin

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.

Futurefuel

Why It Matters

Sectors

Plastics & RubberCore 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

Industrial Uses

Used in 2 sectors as 1 functional role.

•Monomers in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
•Monomers in All Other Basic Organic Chemical Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.02/gAaron Chemicals LLC

CountryHong Kong

Pack$9.00 / 500 g

Purity65%

Vendors9 available

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

8 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.02	500 g	65%
A2B Chem LLC	United States	$0.08	500 g	65%
AA BLOCKS	United States	$0.13	500 g	90%
Combi-Blocks, Inc.	United States	$0.25	1 kg	65%
AstaTech, Inc	United States	$0.53	100 g	95%
Angene International Limited	United States	$2.84	25 g	90%
Labotest KG	Germany	$453.00	1000 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	65%

Chemical Identity

CAS98-67-9

PubChem CID4765

DTXSIDDTXSID1046421

FormulaC6H6O4S

Mol. Weight174.18 g/mol

SMILESC1=CC(=CC=C1O)S(=O)(=O)O

Data Sources

EPA CompTox (DSSTox) · DTXSID1046421Retrieved 2026-04-06
PubChem · compound 4765Retrieved 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

4-Hydroxyphenylsulfonic acid (CAS 98-67-9) https://chemicalindependence.com/chemical/98-67-9/ EPA CompTox (DSSTox): DTXSID1046421. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1046421 PubChem: 4765. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/4765 EPA Chemical Data Reporting: 98-67-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 98-67-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290899 for CAS 98-67-9. Reporting year: 2024. https://usatrade.census.gov/