Gypsum (Ca(SO4).2H2O)
CAS 13397-24-5
Used in 2 industrial sectors tracked by the EPA.
US production2.1B lb
Import volumeZero
Import dependency0%
Top sourceNo public record
Production is reported production, not a complete census of factories. Production reporting year: 2023.
Where It Comes From
EPA reports by year
- 2023
- US production 2.1B lb · Imports Zero
- 2019
- US production 4.4M lb · Imports Zero
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.
Tennessee Valley Authority
Domestic parents -- activity not disclosed (1)
EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.
Genon Holdings
Why It Matters
Sectors
AgricultureConstruction
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 FDA shortage records
Industrial Uses
Used in 3 sectors as 3 functional roles.
- •Intermediate in Construction (100%)Processing—incorporation into article
- •Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and Hunting (1%)Use—non-incorporative activities
- •Filler in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing) (30%)Processing as a reactant
Chemical Identity
CAS13397-24-5
PubChem CID24928
DTXSIDDTXSID9035674
FormulaCaH4O6S
Mol. Weight172.17 g/mol
SMILESO.O.[O-]S(=O)(=O)[O-].[Ca+2]
Data Sources
- EPA CompTox (DSSTox) · DTXSID9035674Retrieved 2026-04-06
- PubChem · compound 24928Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
Brief citations
Gypsum (Ca(SO4).2H2O) (CAS 13397-24-5) https://chemicalindependence.com/chemical/13397-24-5/ EPA CompTox (DSSTox): DTXSID9035674. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9035674 PubChem: 24928. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24928 EPA Chemical Data Reporting: 13397-24-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 13397-24-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting