Ferric hydroxide

CAS 1309-33-7

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

FeH₃O₃106.9 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$218M

Top sourceChina 38%

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 282110 · basket

EPA reports by year

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

These shares come from HS customs code 282110, which covers 7 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 38%ChinaDE 33%GermanyBR 9%BrazilIN 8%IndiaIT 5%Italy

Czech Republic
Spain
South Korea
United Kingdom
Norway
Taiwan
Mexico
South Africa
Poland
Austria
Singapore
Egypt
Netherlands

EPA-registered manufacturers (2)

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

Arconic

The Shepherd Material Science

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Basf

Why It Matters

Sectors

Metals & MiningTextiles

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.

•Pigment in Synthetic Dye and Pigment ManufacturingProcessing as a reactant
•Solids separation (precipitating) agent, not otherwise specified in Primary Metal Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS1309-33-7

PubChem CID73964

DTXSIDDTXSID5051652

FormulaFeH3O3

Mol. Weight106.87 g/mol

SMILES[OH-].[OH-].[OH-].[Fe+3]

Data Sources

EPA CompTox (DSSTox) · DTXSID5051652Retrieved 2026-04-06
PubChem · compound 73964Retrieved 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

← Back to Dashboard ← Back to Metals & Mining

Brief citations

Ferric hydroxide (CAS 1309-33-7) https://chemicalindependence.com/chemical/1309-33-7/ EPA CompTox (DSSTox): DTXSID5051652. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5051652 PubChem: 73964. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/73964 EPA Chemical Data Reporting: 1309-33-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1309-33-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 282110 for CAS 1309-33-7. Reporting year: 2024. https://usatrade.census.gov/