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Calcium magnesium oxide

CAS 37247-91-9

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

US productionCBI
Top sourceNo public record

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023.

Where It Comes From

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential
EPA-registered manufacturers (8)
Carmeuse Holding S A · LU Luxembourg
Rearden Holdings Eins Gmbh · DE Germany
Carmeuse Lime
Graymont
Lhoist North America
Show all 8
Magnesita Refractories
Martin Marietta Materials
Sunflower Electric Power

Why It Matters

Sectors
AgricultureWaterConstructionMetals & MiningConsumer ProductsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 11 sectors as 14 functional roles.

  • •Absorbent in Primary Metal Manufacturing (100%)Processing as a reactant
  • •Filler in Miscellaneous Manufacturing (1%)Processing as a reactant
  • •Binder in Construction (1%)Processing as a reactant
  • •Intermediate in All Other Basic Inorganic Chemical Manufacturing (1%)Processing as a reactant
  • •Flux agent in Primary Metal Manufacturing (70%)Processing as a reactant
  • •pH regulating agent in Wholesale and Retail TradeProcessing as a reactant
  • •Adsorbent in Primary Metal ManufacturingProcessing as a reactant
  • •Intermediate in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing)Processing—incorporation into formulation, mixture, or reaction product
  • •Adhesion/cohesion promoter in Mining (except Oil and Gas) and support activitiesProcessing as a reactant
  • •pH regulating agent in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant
  • •pH regulating agent in UtilitiesProcessing as a reactant
  • •Binder in Asphalt Paving, Roofing, and Coating Materials ManufacturingProcessing as a reactant
  • •Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and HuntingUse—non-incorporative activities
  • •Chemical reaction regulator in Primary Metal Manufacturing (27%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chemical reaction regulator in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing) (7%)Processing—incorporation into article
  • •Adhesion/cohesion promoter in ConstructionProcessing as a reactant
  • •Softener and conditioner in Utilities (100%)Processing as a reactant
  • •Sealant (barrier) in ConstructionProcessing as a reactant
  • •Binder in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant
  • •Stabilizing agent in ConstructionProcessing as a reactant
  • •Drier in Primary Metal ManufacturingProcessing as a reactant
  • •Chemical reaction regulator in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant
  • •Flux agent in UtilitiesProcessing as a reactant

Chemical Identity

CAS37247-91-9
PubChem CID161939
DTXSIDDTXSID80890840
FormulaCaMgO2
Mol. Weight96.38 g/mol
SMILES[O-2].[O-2].[Mg+2].[Ca+2]

Data Sources

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Brief citations

Calcium magnesium oxide (CAS 37247-91-9) https://chemicalindependence.com/chemical/37247-91-9/ EPA CompTox (DSSTox): DTXSID80890840. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID80890840 PubChem: 161939. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/161939 EPA Chemical Data Reporting: 37247-91-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 37247-91-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting