Sulfurous acid, potassium salt (1:1)

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

Molecular structure of 7773-03-7
US ProductionCBI
Import Value$4M
Top SourceItaly 46%

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 283220 · basket

These shares come from HS customs code 283220, which covers 7 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
IT 46%ItalyCN 33%ChinaDE 18%GermanyIN 1%IndiaNZ 1%New Zealand
EPA-registered manufacturers (4)
Tessenderlo Group Nv/Sa · BE Belgium
Hydrite Chemical
Pvs Chemicals
Tessenderlo Kerley, Inc. - Eufaula Facility
EPA-registered importers (2)
Tessenderlo Group Nv/Sa · BE Belgium
Tessenderlo Kerley

Why It Matters

Sectors
AgricultureFoodConsumer Products
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 3 sectors as 2 functional roles.

  • •Corrosion inhibitors and anti-scaling agents in Wholesale and Retail Trade (100%)Processing as a reactant
  • •Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and Hunting (89%)Processing—repackaging
  • •Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (95%)Processing as a reactant

Chemical Identity

CAS7773-03-7
PubChem CID23663620
DTXSIDDTXSID6064795
FormulaHKO3S
Mol. Weight120.17 g/mol
SMILESOS(=O)[O-].[K+]

Data Sources

DTXSID60647952026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

236636202026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/23663620/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/23663620.json

7773-03-72026-04-24

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

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

CAS 7773-03-72026-04-25

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

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

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