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Sulfurous acid, magnesium salt (2:1)

CAS 13774-25-9

Used in 4 industrial sectors tracked by the EPA.

Molecular structure of 13774-25-9
1 Mg²⁺
US production11.4M lb
Import volumeZero
Import dependency0%
Top sourceNo public record

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 283220 · basket

EPA reports by year
2023
US production 11.4M lb · Imports Zero
2019
US production 88.5M lb · Imports Zero

HS customs code 283220 covers 11 tracked chemicals in total. US Census does not break out this chemical's share, 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)
Hydrite Chemical
Thatcher

Why It Matters

Sectors
FoodEnergyWaterCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 4 sectors as 2 functional roles.

  • •Antioxidant in Food, beverage, and tobacco product manufacturing (85%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in All Other Chemical Product and Preparation Manufacturing (15%)Processing—incorporation into formulation, mixture, or reaction product
  • •Reducing agent in Oil and Gas Drilling, Extraction, and Support activities (30%)Processing—incorporation into formulation, mixture, or reaction product
  • •Reducing agent in Utilities (30%)Processing—incorporation into formulation, mixture, or reaction product
  • •Reducing agent in Food, beverage, and tobacco product manufacturing (30%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS13774-25-9
PubChem CID10130272
DTXSIDDTXSID40889619
FormulaH2MgO6S2
Mol. Weight186.45 g/mol
SMILESOS(=O)[O-].OS(=O)[O-].[Mg+2]

Data Sources

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Brief citations

Sulfurous acid, magnesium salt (2:1) (CAS 13774-25-9) https://chemicalindependence.com/chemical/13774-25-9/ EPA CompTox (DSSTox): DTXSID40889619. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID40889619 PubChem: 10130272. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/10130272 EPA Chemical Data Reporting: 13774-25-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 13774-25-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting