Sodium 2-methylprop-2-ene-1-sulfonate

CAS 1561-92-8

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

Molecular structure of 1561-92-8 — 1 Na⁺

US productionCBI

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

Import value, 2024$40M

Top sourceGermany 22%

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 290410 · basket

EPA reports by year

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

These shares come from HS customs code 290410, which covers 115 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 22%GermanyIT 20%ItalyCN 14%ChinaBE 11%BelgiumIN 11%India

Spain
Netherlands
Czech Republic
Brazil
Taiwan
Hong Kong

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.

Access Chemicals & Services

EPA-registered importers (3)

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

Kowa · JP Japan

Capital Resin

Kowa Holdings America

Why It Matters

Sectors

AgriculturePaints & Coatings

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 Paint and Coating Manufacturing (100%)Processing as a reactant
•Monomers in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.01/gAaron Chemicals LLC

CountryHong Kong

Pack$5.00 / 500 g

Purity98%

Vendors13 available

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

12 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.02	500 g	98%
A2B Chem LLC	United States	$0.03	500 g	98%
BLD Pharmatech GmbH	Germany	$0.03	1 kg	97%
BLD Pharmatech Ltd.	China	$0.03	1 kg	97%
AA BLOCKS	United States	$0.03	500 g	98%
AK Scientific Specialized	United States	$0.10	500 g	95%
BLD Pharmatech Co., Limited	United States	$0.13	500 g	97%
Ambeed, Inc.	United States	$0.13	500 g	97%
AK Scientific, Inc.	United States	$0.14	500 g	98%
Angene International Limited	United States	$0.23	500 g	95%
Combi-Blocks, Inc.	United States	$0.25	1 kg	97%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS1561-92-8

PubChem CID23663624

DTXSIDDTXSID2044840

FormulaC4H7NaO3S

Mol. Weight158.15 g/mol

SMILESCC(=C)CS(=O)(=O)[O-].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID2044840Retrieved 2026-04-06
PubChem · compound 23663624Retrieved 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

Sodium 2-methylprop-2-ene-1-sulfonate (CAS 1561-92-8) https://chemicalindependence.com/chemical/1561-92-8/ EPA CompTox (DSSTox): DTXSID2044840. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2044840 PubChem: 23663624. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23663624 EPA Chemical Data Reporting: 1561-92-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1561-92-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290410 for CAS 1561-92-8. Reporting year: 2024. https://usatrade.census.gov/