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Sodium hydrosulfide

CAS 16721-80-5

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

US productionCBI
Import value, 2024$14M
Top sourceMexico 79%

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 283010 · narrow

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 283010, which covers 4 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
MX 79%MexicoCN 11%ChinaSG 7%SingaporeAT 2%AustriaJP 1%Japan
EPA-registered manufacturers (17)
Italmatch Chemicals Spa · IT Italy
Syensqo Sa · BE Belgium
Calumet Specialty Products Partners
Chemical Products
Delek Us Holdings
Show all 17
Dover Chemical
Ergon
Genesis Energy, L.P
Hf Sinclair
Jupiter Sulphur
Lanxess
Newmarket
Solvay
Thatcher
The El
The International Group
Vanderbilt Chemicals
Domestic parents -- activity not disclosed (3)
Albemarle
Altair Paramount
Chemical Distribution Network
EPA-registered importers (3)
Brenntag
Energizer Battery Manufacturing
Tannin

Why It Matters

Sectors
EnergyMetals & MiningPlastics & RubberTextilesPaper & PrintingCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 13 sectors as 12 functional roles.

  • •Reducing agent in Other (2%)Processing as a reactant
  • •Intermediate in All Other Basic Organic Chemical Manufacturing (18%)Processing as a reactant
  • •Tanning agents not otherwise specified in Textiles, apparel, and leather manufacturing (3%)Use—non-incorporative activities
  • •Intermediate in All Other Basic Inorganic Chemical Manufacturing (28%)Processing as a reactant
  • •Reducing agent in Paper Manufacturing (72%)Processing as a reactant
  • •Intermediate in Paper Manufacturing (100%)Processing as a reactant
  • •Solids separation (precipitating) agent, not otherwise specified in Mining (except Oil and Gas) and support activities (98%)Processing—repackaging
  • •Reducing agent in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into article
  • •Flotation agent in Mining (except Oil and Gas) and support activities (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Cyclic Crude and Intermediate Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product
  • •Bleaching agent in Paper Manufacturing (100%)Processing as a reactant
  • •Chemical reaction regulator in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
  • •Monomers in Plastics Material and Resin Manufacturing (50%)Processing as a reactant
  • •Plasticizer in Plastics Product Manufacturing (50%)Processing as a reactant
  • •Reducing agent in Miscellaneous Manufacturing (100%)Processing as a reactant
  • •CBI in CBICBI
  • •Processing aids, specific to petroleum production in Petroleum Refineries (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Mining (except Oil and Gas) and support activities (40%)Processing as a reactant
  • •Lubricating agent in Petroleum Lubricating Oil and Grease Manufacturing (100%)Processing as a reactant
  • •Intermediate in Petroleum Lubricating Oil and Grease Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.03/gAaron Chemicals LLC
CountryHong Kong
Pack$15.00 / 500 g
Purity70%
Vendors7 available

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

6 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.03500 g70%
A2B Chem LLCUnited States$0.08500 g68%
AA BLOCKSUnited States$0.09500 g68%
Angene International LimitedUnited States$3.0825 g60%
AstaTech, IncUnited States$297.001 g95%
AngeneChina → Hong Kong$4266.6730 mg70%

Chemical Identity

CAS16721-80-5
PubChem CID28015
DTXSIDDTXSID3029738
FormulaHNaS
Mol. Weight56.07 g/mol
SMILES[Na+].[SH-]

Data Sources

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Brief citations

Sodium hydrosulfide (CAS 16721-80-5) https://chemicalindependence.com/chemical/16721-80-5/ EPA CompTox (DSSTox): DTXSID3029738. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3029738 PubChem: 28015. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/28015 EPA Chemical Data Reporting: 16721-80-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 16721-80-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283010 for CAS 16721-80-5. Reporting year: 2024. https://usatrade.census.gov/