Copper sulfide (CuS)

CAS 1317-40-4

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

CuS95.6 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$347M

Import volume26.5K lb

Top sourceCanada 24%

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. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 283090, 320649 · basket

EPA reports by year

2023: US production Confidential · Imports 26.5K lb
2019: US production Confidential · Imports Zero

These shares come from HS customs code 283090, 320649, which covers 74 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

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

CA 24%CanadaDE 20%GermanyMX 13%MexicoJP 6%JapanCN 6%China

Colombia
Taiwan
Romania
Egypt
Israel
Slovakia
Turkey
Ireland
Malaysia
Brazil
Switzerland
Finland
Poland
Denmark
Bosnia and Herzegovina
South Africa
United Arab Emirates
Cyprus
Greece
Philippines
Czech Republic
Moldova
Singapore
Slovenia
New Zealand
Indonesia
Hungary
Australia
Peru
Pakistan
Portugal
Honduras
Tunisia

EPA-registered manufacturers (5)

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

Rio Tinto Plc · GB United Kingdom

Ecovyst

Marathon Petroleum

Montana Resources

Rio Tinto America

EPA-registered importers (1)

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

Johnson Matthey

Why It Matters

Sectors

EnergyMetals & 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 FDA shortage records

Industrial Uses

Used in 4 sectors as 3 functional roles.

•Catalyst in Petroleum Refineries (100%)Use—non-incorporative activities
•Adsorbent in All Other Chemical Product and Preparation Manufacturing (100%)Use—non-incorporative activities
•Intermediate in Other (100%)Use—non-incorporative activities
•Intermediate in Primary Metal Manufacturing (0%)Processing as a reactant

Chemical Identity

CAS1317-40-4

PubChem CID165914

DTXSIDDTXSID0061666

FormulaCuS

Mol. Weight95.61 g/mol

SMILES[S-2].[Cu+2]

Data Sources

EPA CompTox (DSSTox) · DTXSID0061666Retrieved 2026-04-06
PubChem · compound 165914Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Copper sulfide (CuS) (CAS 1317-40-4) https://chemicalindependence.com/chemical/1317-40-4/ EPA CompTox (DSSTox): DTXSID0061666. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0061666 PubChem: 165914. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/165914 EPA Chemical Data Reporting: 1317-40-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1317-40-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283090,320649 for CAS 1317-40-4. Reporting year: 2024. https://usatrade.census.gov/