Calcium

CAS 7440-70-2

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

Ca40.1 g/mol

no molecular structure to draw

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$17M

Top sourceChina 99%

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

Customs basis: HS 280512 · exact

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 99%ChinaJP 1%Japan

United Kingdom
Canada
Mexico
India

EPA-registered manufacturers (4)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Ecobat

Minerals Technologies

Real Alloy Holding

Real Alloy Recycling

Domestic parents -- activity not disclosed (2)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Ferroglobe Usa

Trafigura Trading

EPA-registered importers (9)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Ferroglobe Plc · GB United Kingdom

Glencore Plc · CH Switzerland

American Metal Fibers

Cleveland Cliffs Burns Harbor

Cleveland-Cliffs

Show all 9

Glencore

Sterling Steel

Stillwater Mining

Tms International

Why It Matters

Sectors

EnergyWaterElectronicsTransportationConstructionMetals & MiningCore Chemicals

Downstream UsesNot recorded

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 Shortage

Industrial Uses

Used in 5 sectors as 6 functional roles.

•Intermediate in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Mining (except Oil and Gas) and support activities (100%)Processing—incorporation into formulation, mixture, or reaction product
•Alloys in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Stabilizing agent in Primary Metal Manufacturing (100%)Processing—incorporation into article
•Fuel agents in Petroleum Refineries (100%)Processing—incorporation into formulation, mixture, or reaction product
•Flocculating agent in Utilities (40%)Processing—incorporation into formulation, mixture, or reaction product
•Flame retardant in All Other Basic Inorganic Chemical Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS7440-70-2

PubChem CID5460341

DTXSIDDTXSID9050484

FormulaCa

Mol. Weight40.08 g/mol

SMILES[Ca]

Data Sources

EPA CompTox (DSSTox) · DTXSID9050484Retrieved 2026-04-06
PubChem · compound 5460341Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
FDA Drug ShortagesRetrieved 2026-06-13
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Calcium (CAS 7440-70-2) https://chemicalindependence.com/chemical/7440-70-2/ EPA CompTox (DSSTox): DTXSID9050484. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9050484 PubChem: 5460341. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/5460341 EPA Chemical Data Reporting: 7440-70-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting FDA Drug Shortages: CAS 7440-70-2. Retrieved 2026-06-13. https://www.accessdata.fda.gov/scripts/drugshortages/ US Census international trade: HS 280512 for CAS 7440-70-2. Reporting year: 2024. https://usatrade.census.gov/