Aluminum sulfide (Al2S3)

CAS 1302-81-4

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

Al₂S₃150.2 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$23M

Import volumeZero

Top sourceAustria 29%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 283090 · basket

EPA reports by year

2019: US production Confidential · Imports Zero

These shares come from HS customs code 283090, which covers 34 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).

AT 29%AustriaDE 17%GermanyGB 13%United KingdomCN 9%ChinaIN 8%India

Philippines
Mexico
Netherlands
Malaysia
Singapore

EPA-registered manufacturers (3)

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

Chs

Delek Refining

Delek Us Holdings

Why It Matters

Sectors

EnergyCore 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 2 sectors as 2 functional roles.

•Processing aids, specific to petroleum production in Petroleum Refineries (100%)Processing as a reactant
•Catalyst in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS1302-81-4

PubChem CID159369

DTXSIDDTXSID80893235

FormulaAl2S3

Mol. Weight150.2 g/mol

SMILES[Al+3].[Al+3].[S-2].[S-2].[S-2]

Data Sources

EPA CompTox (DSSTox) · DTXSID80893235Retrieved 2026-04-06
PubChem · compound 159369Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Aluminum sulfide (Al2S3) (CAS 1302-81-4) https://chemicalindependence.com/chemical/1302-81-4/ EPA CompTox (DSSTox): DTXSID80893235. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID80893235 PubChem: 159369. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/159369 EPA Chemical Data Reporting: 1302-81-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1302-81-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283090 for CAS 1302-81-4. Reporting year: 2024. https://usatrade.census.gov/