Sulfurous acid

Used in 1 industrial sectors tracked by the EPA.

Molecular structure of 7782-99-2
US Production182.5M lbs
Import VolumeZero
Import Dependency0%

Where It Comes From

Customs basis: HS 281119 · basket

This chemical's HS customs code 281119 covers 19chemicals in total. US Census does not break out this chemical's share of that bucket, so the country-of-origin mix is not available. EPA CDR reports import dependency at the chemical level separately, shown above.

EPA-registered manufacturers (2)
Domtar
Thatcher

Why It Matters

Sectors
Paper & Printing
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 1 sector as 1 functional role.

  • •Intermediate in Paper Manufacturing (100%)Use—non-incorporative activities

Chemical Identity

CAS7782-99-2
PubChem CID1100
DTXSIDDTXSID7042435
FormulaH2O3S
Mol. Weight82.08 g/mol
SMILESOS(=O)O

Data Sources

DTXSID70424352026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

11002026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/1100/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/1100.json

7782-99-22026-04-24

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

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

CAS 7782-99-22026-04-25

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

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

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