Hydrogen sulfide

CAS 7783-06-4

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

H₂S34.1 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$66M

Top sourceChina 46%

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 281119 · basket

EPA reports by year

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

These shares come from HS customs code 281119, which covers 30 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).

CN 46%ChinaDE 17%GermanyMY 12%MalaysiaKR 5%South KoreaTW 5%Taiwan

Japan
Netherlands
Switzerland
Norway
Jordan
Italy
Czech Republic
United Kingdom

EPA-registered manufacturers (22)

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

Eurecat France Sas · FR France

Shell Plc · GB United Kingdom

Totalenergies Se · FR France

Arkema

Asphalt And Fuel Supply

Show all 22

Cenovus U.S

Cvr Energy

Deer Park Refining

Delta Air Lines

Ecovyst

Eurecat U.S., Incorporated

Hf Sinclair Parco Refining

Marathon Petroleum

Marathon Petroleum Coporation

Par Hawaii Refining

Pbf Holding

Shell Petroleum

Superior Refining

Totalenergies Holdings Usa

Trafigura Trading

Vertex Energy- Mobile Refinery

Wrb Refining

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.

Martinez Renewables

EPA-registered importers (5)

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

Gunvor Usa

Matheson Tri-Gas

Why It Matters

Sectors

EnergyConstructionPlastics & RubberConsumer ProductsCore 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 9 sectors as 4 functional roles.

•Intermediate in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant
•Intermediate in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
•Catalyst in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
•Intermediate in Petroleum Refineries (100%)Processing as a reactant
•Intermediate in Services (100%)Processing as a reactant
•Intermediate in Petrochemical Manufacturing (100%)Processing as a reactant
•Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
•Odor agents in Petrochemical Manufacturing (100%)Processing as a reactant
•Fuels and fuel additives in Industrial Gas Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Fuels and fuel additives in Petroleum Refineries (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Synthetic Rubber Manufacturing (100%)Processing as a reactant
•Fuels and fuel additives in Wholesale and Retail Trade (100%)Processing—repackaging

Vendor Pricing

$2.55/gA2B Chem LLC (1 week)

CountryUnited States

Pack$578.00 / 227 g

Purity99%

Vendors5 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

4 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS (1 week)	United States	$2.99	227 g	99%
Labotest KG	Germany	$453.00	1000 mg	90%
Sigma-Aldrich (Rush Stock)	Germany	$15082.10	100 mg	—
Sigma-Aldrich	Germany	$15082.10	100 mg	—

Chemical Identity

CAS7783-06-4

PubChem CID402

DTXSIDDTXSID4024149

FormulaH2S

Mol. Weight34.08 g/mol

SMILESS

Data Sources

EPA CompTox (DSSTox) · DTXSID4024149Retrieved 2026-04-06
PubChem · compound 402Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · 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

Hydrogen sulfide (CAS 7783-06-4) https://chemicalindependence.com/chemical/7783-06-4/ EPA CompTox (DSSTox): DTXSID4024149. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4024149 PubChem: 402. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/402 EPA Chemical Data Reporting: 7783-06-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7783-06-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 281119 for CAS 7783-06-4. Reporting year: 2024. https://usatrade.census.gov/