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Sulfur dioxide

CAS 7446-09-5

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

Molecular structure of 7446-09-5
US productionCBI
Import value, 2024$75M
Top sourceChina 30%

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 281129 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production 202.9M lb · Imports 5.1M lb

These shares come from HS customs code 281129, which covers 18 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 30%ChinaAT 23%AustriaPL 9%PolandCA 8%CanadaCZ 8%Czech Republic
EPA-registered manufacturers (1)
Pvs Chemical Solutions
Domestic parents -- activity not disclosed (2)
Cirba Solutions
Ineos Enterprise Us Hold
EPA-registered importers (2)
Chemtrade Logistics · CA Canada
Chemtrade Holdco Us

Why It Matters

Sectors
FoodWaterElectronicsMetals & MiningPaper & PrintingCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 6 sectors as 6 functional roles.

  • •Oxidizing/reducing agents in Mining (except Oil and Gas) and support activities (20%)Use—non-incorporative activities
  • •Oxidizing/reducing agents in Utilities (20%)Use—non-incorporative activities
  • •Bleaching agents in Paper Manufacturing (100%)Processing as a reactant
  • •Agricultural chemicals (non-pesticidal) in All Other Basic Organic Chemical Manufacturing (1%)Processing as a reactant
  • •Reducing agent in All Other Basic Inorganic Chemical Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
  • •Agricultural chemicals (non-pesticidal) in All Other Basic Inorganic Chemical Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in All Other Basic Inorganic Chemical Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
  • •Ion exchange agents in Electrical Equipment, Appliance, and Component Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$1.24/gA2B Chem LLC (1 week)
CountryUnited States
Pack$564.00 / 454 g
PurityNot recorded
Vendors2 available

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

1 more vendor
VendorCountry$/gPackPurity
AA BLOCKS (1 week)United States$1.46454 g—

Chemical Identity

CAS7446-09-5
PubChem CID1119
DTXSIDDTXSID6029672
FormulaO2S
Mol. Weight64.07 g/mol
SMILESO=S=O

Data Sources

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Brief citations

Sulfur dioxide (CAS 7446-09-5) https://chemicalindependence.com/chemical/7446-09-5/ EPA CompTox (DSSTox): DTXSID6029672. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6029672 PubChem: 1119. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/1119 EPA Chemical Data Reporting: 7446-09-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7446-09-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 281129 for CAS 7446-09-5. Reporting year: 2024. https://usatrade.census.gov/