2-Acrylamido-2-methylpropanesulphonate sodium salt

CAS 5165-97-9

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

Molecular structure of 5165-97-9 — 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$371M

Top sourceChina 27%

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 292419 · basket

EPA reports by year

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

These shares come from HS customs code 292419, which covers 211 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 27%ChinaIN 18%IndiaDE 14%GermanyIT 10%ItalyGB 6%United Kingdom

Hungary
Austria
Spain
Egypt
Canada
Sweden
Ukraine
Denmark
Israel
Lithuania
Greece
Ireland
Taiwan
Uruguay
Turkey
Australia
Singapore
Latvia
Colombia

EPA-registered manufacturers (2)

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

Nalco- An Ecolab

Snf Holding

Domestic parents -- activity not disclosed (3)

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

Dow Chemical

Mitsubishi International Polymertrade

Synthomer

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.

Starchem Usa

Textile Rubber & Chemical

Wego Chemical Group

Why It Matters

Sectors

Consumer ProductsCore 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 4 sectors as 4 functional roles.

•Monomers in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
•Monomers in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant
•Surfactant (surface active agent) in Wholesale and Retail Trade (100%)Use—non-incorporative activities
•CBI in CBICBI
•Intermediate in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS5165-97-9

PubChem CID23665719

DTXSIDDTXSID2027591

FormulaC7H12NNaO4S

Mol. Weight229.23 g/mol

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

Data Sources

EPA CompTox (DSSTox) · DTXSID2027591Retrieved 2026-04-06
PubChem · compound 23665719Retrieved 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-Acrylamido-2-methylpropanesulphonate sodium salt (CAS 5165-97-9) https://chemicalindependence.com/chemical/5165-97-9/ EPA CompTox (DSSTox): DTXSID2027591. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2027591 PubChem: 23665719. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23665719 EPA Chemical Data Reporting: 5165-97-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 5165-97-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292419 for CAS 5165-97-9. Reporting year: 2024. https://usatrade.census.gov/