Sodium hydroxymethanesulfinate

CAS 149-44-0

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$15M

Top sourceGermany 60%

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 283110 · narrow

EPA reports by year

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

These shares come from HS customs code 283110, which covers 2 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 60%GermanyIN 21%IndiaBE 7%BelgiumKR 3%South KoreaCN 3%China

Japan
Guatemala
Italy
Spain
Mexico

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.

Lion Copolymer Holdings

Royce Associates

Why It Matters

Sectors

Plastics & RubberTextilesCore 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 5 sectors as 1 functional role.

•Reducing agent in Textiles, apparel, and leather manufacturing (71%)Processing—repackaging
•Reducing agent in All Other Chemical Product and Preparation Manufacturing (29%)Processing—incorporation into formulation, mixture, or reaction product
•Reducing agent in Synthetic Rubber ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Reducing agent in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
•Reducing agent in Plastics Material and Resin ManufacturingProcessing as a reactant

Chemical Identity

CAS149-44-0

PubChem CID24181102

DTXSIDDTXSID7027120

FormulaCH4NaO3S

Mol. Weight119.1 g/mol

SMILESC(O)S(=O)O.[Na]

Data Sources

EPA CompTox (DSSTox) · DTXSID7027120Retrieved 2026-04-06
PubChem · compound 24181102Retrieved 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

← Back to Dashboard ← Back to Plastics & Rubber

Brief citations

Sodium hydroxymethanesulfinate (CAS 149-44-0) https://chemicalindependence.com/chemical/149-44-0/ EPA CompTox (DSSTox): DTXSID7027120. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7027120 PubChem: 24181102. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24181102 EPA Chemical Data Reporting: 149-44-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 149-44-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283110 for CAS 149-44-0. Reporting year: 2024. https://usatrade.census.gov/