Calcium oxide
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$172M
Top SourceBrazil 23%
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 252210, 282590 · exact
Source Countries
Country of origin for US imports, from Census customs data (2023).
BR 23%BrazilCA 21%CanadaTR 11%TurkeyMX 8%MexicoCN 7%China
- Spain
- Ireland
- Belgium
- Switzerland
- Trinidad and Tobago
- Oman
- Hong Kong
EPA-registered manufacturers (36)
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
Clariant International · CH Switzerland
Advanced Micronutrient Products
Agmet
Aisin Chemical Indiana, Llc.
Show all 36
Austin White Lime
Basf
Cheney Lime And Cement
Clariant
Crown Paper Group
Domtar
Green Bay Packaging
Greer Lime
Haldor Topsoe
Heraeus Metal Processing
Hood Container Corporation (Formely Temple Inland)
International Paper
Jea
Johnson Matthey
Kennametal
Marathon Petroleum
Mccarthy-Bush
Mcwane
Minn-Dak Farmers Cooperative
Mississippi Lime
Nd Paper
O'Brien Industrial Holdings
Packaging Corporation Of America
Pete Lien & Sons
Pixelle Specialty Solutions
Sdw Holdings
Southern Minnesota Beet Sugar Cooperative
Specialty Minerals
Steel Dust Recycling
Sunflower Electric Power
Verso
EPA-registered importers (26)
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
Clariant International · CH Switzerland
Safic Alcan · FR France
Sika Ag · CH Switzerland
Teck Resources · CA Canada
Show all 26
3M
American Water Cdm
Basf
Brady Mccasland
Chemspec
Clariant
Cooper Standard
Cooper Standard Automotive
Denka
Icl Specialty Products North America
Imerys
International Grand Investment
Materials Innovation And Recycling Authority
Nucor Steel Louisiana
Sika
Specialty Minerals
St. Marys Cement In
Teck American Incorporated
Tms International
Univar Solutions
Yara North America
Why It Matters
Sectors
HealthDefenseAgricultureFoodEnergyWaterTransportationConstructionMetals & 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 27 sectors as 21 functional roles.
- •Fillers in Transportation Equipment Manufacturing (0%)Processing—incorporation into article
- •Abrasives in Miscellaneous Manufacturing (0%)Processing—incorporation into article
- •Adhesives and sealant chemicals in Miscellaneous Manufacturing (50%)Processing—incorporation into article
- •Agricultural chemicals (non-pesticidal) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Adhesion/cohesion promoter in Miscellaneous Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Corrosion inhibitors and anti-scaling agents in Utilities (0%)Processing—incorporation into formulation, mixture, or reaction product
- •Adsorbents and absorbents in Paint and Coating ManufacturingProcessing—incorporation into article
- •Adsorbents and absorbents in ConstructionProcessing—incorporation into article
- •Adsorbents and absorbents in Petroleum RefineriesUse—non-incorporative activities
- •Adsorbents and absorbents in Petrochemical ManufacturingUse—non-incorporative activities
- •Adsorbents and absorbents in Industrial Gas ManufacturingUse—non-incorporative activities
- •Adhesives and sealant chemicals in Construction (50%)Processing as a reactant
- •Catalyst in Petrochemical Manufacturing (53%)Processing—incorporation into formulation, mixture, or reaction product
- •Intermediate in All Other Basic Inorganic Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Dehydrating agent (desiccant) in Plastics Material and Resin ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Catalyst in Miscellaneous Manufacturing (8%)Processing—incorporation into formulation, mixture, or reaction product
- •Dehydrating agent (desiccant) in Other (0%)Processing—incorporation into formulation, mixture, or reaction product
- •Paint additives and coating additives not described by other categories in Paint and Coating Manufacturing (6%)Use—non-incorporative activities
- •Adsorbent in All Other Basic Inorganic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Processing aids, specific to petroleum production in Oil and Gas Drilling, Extraction, and Support activitiesProcessing as a reactant
- •Adsorbents and absorbents in Primary Metal ManufacturingProcessing as a reactant
- •Agricultural chemicals (non-pesticidal) in ServicesProcessing as a reactant
- •Dehydrating agent (desiccant) in Synthetic Rubber ManufacturingProcessing as a reactant
- •Dehydrating agent (desiccant) in Rubber Product ManufacturingProcessing as a reactant
- •Chemical reaction regulator in Synthetic Rubber Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Intermediate in Paper Manufacturing (100%)Processing as a reactant
- •Paint additives and coating additives not described by other categories in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing) (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Adsorbents and absorbents in Agriculture, Forestry, Fishing and HuntingProcessing as a reactant
- •Adsorbents and absorbents in Mining (except Oil and Gas) and support activitiesProcessing as a reactant
- •Adsorbents and absorbents in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant
- •Adsorbents and absorbents in UtilitiesProcessing as a reactant
- •pH regulating agent in Mining (except Oil and Gas) and support activitiesUse—non-incorporative activities
- •Adsorbents and absorbents in Paper ManufacturingUse—non-incorporative activities
- •Viscosity adjustors in Oil and Gas Drilling, Extraction, and Support activities (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Adsorbent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Adsorbent in Petrochemical ManufacturingUse—non-incorporative activities
- •Adsorbent in Industrial Gas ManufacturingUse—non-incorporative activities
- •Reducing agent in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
- •Abrasives in Paper Manufacturing (100%)Processing as a reactant
- •Processing aids, specific to petroleum production in Petroleum Refineries (100%)Use—non-incorporative activities
- •Intermediate in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Adsorbents and absorbents in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing)Processing as a reactant
- •Fillers in Food, beverage, and tobacco product manufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Fillers in Pesticide, Fertilizer, and Other Agricultural Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Intermediate in Other (100%)Use—non-incorporative activities
- •Intermediate in Services (100%)Processing as a reactant
- •Fillers in Agriculture, Forestry, Fishing and HuntingProcessing as a reactant
- •Fillers in Asphalt Paving, Roofing, and Coating Materials ManufacturingProcessing as a reactant
- •Intermediate in Industrial Gas ManufacturingProcessing as a reactant
- •Intermediate in Food, beverage, and tobacco product manufacturingProcessing as a reactant
- •Intermediate in Plastics Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •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
- •Fillers in Paper ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Flux agent in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Adhesives and sealant chemicals in ServicesProcessing as a reactant
- •Adhesives and sealant chemicals in Mining (except Oil and Gas) and support activitiesProcessing as a reactant
- •Adhesives and sealant chemicals in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing)Processing as a reactant
- •Adsorbents and absorbents in Wholesale and Retail TradeProcessing as a reactant
- •Adhesion/cohesion promoter in Transportation Equipment Manufacturing (100%)Processing—incorporation into article
- •pH regulating agent in Other (20%)Processing as a reactant
- •Sealant (barrier) in Adhesive Manufacturing (9%)Processing—incorporation into formulation, mixture, or reaction product
- •Stabilizing agent in Construction (15%)Use—non-incorporative activities
- •Absorbent in Utilities (100%)Processing as a reactant
Vendor Pricing
$0.12/gSigma-Aldrich (Rush Stock)
CountryGermany
Pack$303.04 / 2.5 kg
PurityNo data available
Vendors4 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
3 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Sigma-Aldrich | Germany | $0.12 | 2.5 kg | — |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 97% |
| AK Scientific, Inc. | United States | $0.48 | 100 g | — |
Chemical Identity
CAS1305-78-8
PubChem CID14778
DTXSIDDTXSID5029631
FormulaCaO
Mol. Weight56.08 g/mol
SMILESO=[Ca]
Data Sources
DTXSID50296312026-04-06
https://doi.org/10.23645/epacomptox.5588566
Archive: data/sources/comptox/dsstox_identifiers.csv
147782026-04-06
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/14778/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON
Archive: data/sources/pubchem_properties/14778.json
1305-78-82026-04-24
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr.csv
CAS 1305-78-82026-04-25
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr_industrial.csv