Sodium metabisulfite
U.S. production volumes are classified as confidential business information.
US ProductionCBI
Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.
Import Value$30M
Top SourceItaly 45%
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 283210 · narrow
These shares come from HS customs code 283210, which covers 2 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.
Source Countries
Country of origin for US imports, from Census customs data (2023).
IT 45%ItalyCA 17%CanadaIN 11%IndiaMY 7%MalaysiaVN 6%Vietnam
- Japan
- Norway
- Mexico
- United Kingdom
- Netherlands
EPA-registered manufacturers (1)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Ineos Calabrian
EPA-registered importers (15)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Basf Se · DE Germany
Esseco Group Srl · IT Italy
Teck Resources · CA Canada
Basf
Esseco Usa
Show all 15
Global Chemical Resources
Greenchem Industries
Quadra Chemicals
Redox
Teck American Incorporated
Thatcher
Valudor Products
Westco Chemicals
Wilbur-Ellis
Wintersun International
Why It Matters
Sectors
AgricultureFoodWaterMetals & MiningPlastics & RubberTextilesConsumer ProductsPaints & CoatingsPaper & PrintingCore Chemicals
Downstream UsesNo data available
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Industrial Uses
Used in 13 sectors as 11 functional roles.
- •Bleaching agents in All Other Chemical Product and Preparation ManufacturingUse—non-incorporative activities
- •Bleaching agent in Paper ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Oxidizing/reducing agents in Utilities (10%)Use—non-incorporative activities
- •Surface active agents in All Other Basic Organic Chemical Manufacturing (30%)Processing as a reactant
- •Process regulators in Organic Fiber Manufacturing (10%)Processing as a reactant
- •Reducing agent in Mining (except Oil and Gas) and support activities (10%)Processing as a reactant
- •Reducing agent in Services (20%)Processing as a reactant
- •Reducing agent in Photographic Film, Paper, Plate, and Chemical Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
- •Preservative in Food, beverage, and tobacco product manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
- •Process regulators in Agriculture, Forestry, Fishing and Hunting (10%)Processing—incorporation into formulation, mixture, or reaction product
- •Oxidizing/reducing agents in Food, beverage, and tobacco product manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
- •Oxidizing/reducing agents in Mining (except Oil and Gas) and support activities (20%)Use—non-incorporative activities
- •Flotation agent in Mining (except Oil and Gas) and support activities (100%)Processing as a reactant
- •Antioxidant in Photographic Film, Paper, Plate, and Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Antioxidant in Food, beverage, and tobacco product manufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Solvents (for cleaning or degreasing) in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (30%)Processing—incorporation into article
- •Solvents (which become part of product formulation or mixture) in Custom Compounding of Purchased Resins (30%)Processing—incorporation into article
- •Oxidizing/reducing agents in Textiles, apparel, and leather manufacturing (10%)Processing—incorporation into article
Chemical Identity
CAS7681-57-4
PubChem CID656671
DTXSIDDTXSID0029684
FormulaNa2O5S2
Mol. Weight190.11 g/mol
SMILES[O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]
Data Sources
DTXSID00296842026-04-06
https://doi.org/10.23645/epacomptox.5588566
Archive: data/sources/comptox/dsstox_identifiers.csv
6566712026-04-06
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/656671/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON
Archive: data/sources/pubchem_properties/656671.json
7681-57-42026-04-24
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr.csv
CAS 7681-57-42026-04-25
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr_industrial.csv