Chlorine
CAS 7782-50-5
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, 2024$213M
Top sourceCanada 67%
At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction 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 280110 · 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).
CA 67%CanadaMX 31%MexicoCO 1%Colombia
- South Korea
- Italy
- Japan
- Trinidad and Tobago
EPA-registered manufacturers (10)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Erco Worldwide · CA Canada
Shin-Etsu Chemical · JP Japan
Covestro
Erco (Us) Holdings
Ineos Enterprises Us Hold
Show all 10
Kuehne Chemical
Occidental Petroleum
Olin
Shintech Louisiana
Westlake
Domestic parents -- activity not disclosed (3)
EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.
Chemours
Emd Holding
Timet
EPA-registered importers (6)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Chemtrade Logistics · CA Canada
Nippon Sanso Holdings · JP Japan
Chemtrade Holdco Us Inc (Electrochem)
Lanxess
Matheson Tri-Gas
Show all 6
Mays Chemical Company Of Puerto Ri
Why It Matters
Sectors
AgricultureFoodEnergyWaterConstructionMetals & MiningPlastics & RubberTextilesConsumer ProductsPaints & CoatingsPaper & PrintingCore 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 FDA shortage records
Industrial Uses
Used in 19 sectors as 13 functional roles.
- •Refrigerants in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into article
- •Intermediate in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant
- •Ion exchange agent in UtilitiesProcessing as a reactant
- •Bleaching agent in All Other Basic Inorganic Chemical ManufacturingProcessing as a reactant
- •Intermediate in Wholesale and Retail TradeProcessing—repackaging
- •Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Intermediate in Plastics Material and Resin Manufacturing (100%)Processing as a reactant
- •Brightener in Paper Manufacturing (7%)Processing as a reactant
- •Bleaching agent in Other (88%)Processing as a reactant
- •Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
- •Intermediate in Soap, Cleaning Compound, and Toilet Preparation ManufacturingProcessing as a reactant
- •Opacifer in All Other Basic Inorganic Chemical ManufacturingUse—non-incorporative activities
- •Pigment in All Other Basic Inorganic Chemical ManufacturingProcessing as a reactant
- •Oxidizing agent in All Other Basic Inorganic Chemical ManufacturingProcessing as a reactant
- •Oxidizing agent in Soap, Cleaning Compound, and Toilet Preparation ManufacturingUse—non-incorporative activities
- •Bleaching agent in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
- •Bleaching agent in Paper ManufacturingUse—non-incorporative activities
- •Intermediate in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (1%)Processing as a reactant
- •Monomers in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
- •Intermediate in Synthetic Rubber Manufacturing (0%)Processing as a reactant
- •Intermediate in Synthetic Dye and Pigment Manufacturing (3%)Processing as a reactant
- •Intermediate in All Other Basic Inorganic Chemical Manufacturing (97%)Processing as a reactant
- •Intermediate in Wood Product Manufacturing (2%)Processing as a reactant
- •Intermediate in Food, beverage, and tobacco product manufacturing (5%)Processing as a reactant
- •Intermediate in Plastics Product ManufacturingProcessing as a reactant
- •Intermediate in Paper ManufacturingProcessing as a reactant
- •Stabilizing agent in All Other Basic Inorganic Chemical ManufacturingProcessing—repackaging
- •Intermediate in Primary Metal ManufacturingProcessing as a reactant
- •Intermediate in Petrochemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Cleaning agent in All Other Chemical Product and Preparation Manufacturing (23%)Processing—incorporation into formulation, mixture, or reaction product
- •Intermediate in Mining (except Oil and Gas) and support activities (0%)Processing as a reactant
- •Semiconductor and photovoltaic agent in Industrial Gas ManufacturingUse—non-incorporative activities
Chemical Identity
CAS7782-50-5
PubChem CID24526
DTXSIDDTXSID1020273
FormulaCl2
Mol. Weight70.9 g/mol
SMILESClCl
Data Sources
- EPA CompTox (DSSTox) · DTXSID1020273Retrieved 2026-04-06
- PubChem · compound 24526Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- FDA National Drug Code directoryRetrieved 2026-04-07
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Chlorine (CAS 7782-50-5) https://chemicalindependence.com/chemical/7782-50-5/ EPA CompTox (DSSTox): DTXSID1020273. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1020273 PubChem: 24526. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24526 EPA Chemical Data Reporting: 7782-50-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting FDA National Drug Code directory: CAS 7782-50-5. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 280110 for CAS 7782-50-5. Reporting year: 2024. https://usatrade.census.gov/