Sulfur trioxide

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

Molecular structure of 7446-11-9
US ProductionCBI
Import Value$75M
Top SourceChina 30%

The EPA did not publish how much of this chemical companies made or imported, or marked that amount confidential. Without that volume, ACID cannot calculate import dependency.

Where It Comes From

Customs basis: HS 281129 · basket

These shares come from HS customs code 281129, which covers 8 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
CN 30%ChinaAT 23%AustriaPL 9%PolandCA 8%CanadaCZ 8%Czech Republic
EPA-registered manufacturers (5)
Cstn Holdings
Dte Energy
Duke Energy
Pq
Steel Dust Recycling

Why It Matters

Sectors
DefenseAgricultureEnergyWaterConstructionMetals & MiningPlastics & RubberConsumer ProductsCore Chemicals
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 13 sectors as 5 functional roles.

  • •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
  • •Intermediate in Utilities (100%)Processing as a reactant
  • •Intermediate in Explosives Manufacturing (5%)Processing as a reactant
  • •Conductive agent in Utilities (100%)Processing as a reactant
  • •Intermediate in Agriculture, Forestry, Fishing and Hunting (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Processing aids, specific to petroleum production in Petroleum Refineries (20%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Cyclic Crude and Intermediate Manufacturing (60%)Processing—incorporation into formulation, mixture, or reaction product
  • •Agricultural chemicals (non-pesticidal) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (5%)Processing—incorporation into formulation, mixture, or reaction product
  • •Process regulators in All Other Chemical Product and Preparation Manufacturing (5%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in All Other Basic Inorganic Chemical Manufacturing (40%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Primary Metal Manufacturing (4%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in All other Petroleum and Coal Products Manufacturing (10%)Processing as a reactant
  • •Intermediate in Plastics Material and Resin Manufacturing (10%)Processing as a reactant
  • •Intermediate in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (40%)Processing as a reactant
  • •Process regulators in Petroleum Refineries (2%)Processing as a reactant

Chemical Identity

CAS7446-11-9
PubChem CID24682
DTXSIDDTXSID1029673
FormulaO3S
Mol. Weight80.07 g/mol
SMILESO=S(=O)=O

Data Sources

DTXSID10296732026-04-06

https://doi.org/10.23645/epacomptox.5588566

Archive: data/sources/comptox/dsstox_identifiers.csv

246822026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/24682/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/24682.json

7446-11-92026-04-24

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr.csv

CAS 7446-11-92026-04-25

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr_industrial.csv

← Back to Dashboard← Back to Defense