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Cobalt hydroxide (Co(OH)​2)

CAS 21041-93-0

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

US productionCBI
Import value, 2024$35M
Top sourceFinland 56%

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 282200 · narrow

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

These shares come from HS customs code 282200, which covers 6 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
FI 56%FinlandGB 19%United KingdomBE 17%BelgiumTW 3%TaiwanCN 3%China
EPA-registered manufacturers (2)
Global Tungsten &Amp; Powders
Shepherd Material Science
Domestic parents -- activity not disclosed (1)
Bluestone Specialty Chemicals
EPA-registered importers (7)
Basf Se · DE Germany
Umicore Sa · BE Belgium
Basf
Haldor Topsoe
Jervois Americas
Show all 7
Milliken &
Umicore Usa

Why It Matters

Sectors
AgricultureEnergyElectronicsMetals & MiningPlastics & RubberCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 8 sectors as 4 functional roles.

  • •Catalyst in Plastics Material and Resin Manufacturing (95%)Processing—incorporation into formulation, mixture, or reaction product
  • •Surface modifier in All Other Basic Organic Chemical Manufacturing (5%)Processing as a reactant
  • •Catalyst in Petrochemical ManufacturingUse—non-incorporative activities
  • •Intermediate in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant
  • •Intermediate in All Other Basic Inorganic Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Conductive agent in Electrical Equipment, Appliance, and Component ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Primary Metal Manufacturing (100%)Processing as a reactant
  • •Catalyst in Oil and Gas Drilling, Extraction, and Support activitiesProcessing—incorporation into formulation, mixture, or reaction product
  • •Catalyst in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.11/gAaron Chemicals LLC
CountryHong Kong
Pack$56.00 / 500 g
Purity99.9%
Vendors6 available

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

5 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.13500 g99%
A2B Chem LLCUnited States$0.195 kg99.9%
AA BLOCKSUnited States$0.205 kg99.9%
Angene International LimitedUnited States$1.25100 g98%
AngeneChina → Hong Kong$4266.6730 mg99%

Chemical Identity

CAS21041-93-0
PubChem CID10129900
DTXSIDDTXSID70894155
FormulaCoH2O2
Mol. Weight92.948 g/mol
SMILES[OH-].[OH-].[Co+2]

Data Sources

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Brief citations

Cobalt hydroxide (Co(OH)​2) (CAS 21041-93-0) https://chemicalindependence.com/chemical/21041-93-0/ EPA CompTox (DSSTox): DTXSID70894155. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID70894155 PubChem: 10129900. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/10129900 EPA Chemical Data Reporting: 21041-93-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 21041-93-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 282200 for CAS 21041-93-0. Reporting year: 2024. https://usatrade.census.gov/