Calcium sulfite

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

Molecular structure of 10257-55-3
US ProductionCBI
Import Value$4M
Import VolumeZero
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 (3)
Tessenderlo Group Nv/Sa · BE Belgium
Public Service Company Of Colorado
Tessenderlo Kerley, Inc. - Eufaula Facility

Why It Matters

Sectors
ConstructionMetals & Mining
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 1 sector as 1 functional role.

  • Leaching agent in Mining (except Oil and Gas) and support activities (100%)Processing as a reactant

Vendor Pricing

$0.02/gAaron Chemicals LLC
CountryHong Kong
Pack$12.00 / 500 g
Purity90%
Vendors8 available

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

7 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina Hong Kong$0.03500 g90%
A2B Chem LLCUnited States$0.04500 g90%
AA BLOCKSUnited States$0.04500 g90%
Combi-Blocks, Inc.United States$0.251 kg90%
AK Scientific, Inc.United States$3.5625 g95%
Angene International LimitedUnited States$6.8825 g95%
AngeneChina Hong Kong$4266.6730 mg90%

Chemical Identity

CAS10257-55-3
PubChem CID10154041
DTXSIDDTXSID10883104
FormulaCaO3S
Mol. Weight120.14 g/mol
SMILES[O-]S(=O)[O-].[Ca+2]

Data Sources

DTXSID108831042026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

101540412026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/10154041/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/10154041.json

10257-55-32026-04-24

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

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

CAS 10257-55-32026-04-25

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

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