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Iron(II) sulfate

Drug ingredient

CAS 7720-78-7

This drug ingredient has classified U.S. production volumes. EPA withholds the number as confidential business information.

Molecular structure of 7720-78-7
1 Fe²⁺
US productionCBI
Import value, 2024$179M
Top sourceMexico 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 283329 · basket

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

These shares come from HS customs code 283329, which covers 36 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
MX 46%MexicoCN 19%ChinaCA 11%CanadaIN 9%IndiaFI 4%Finland
EPA-registered manufacturers (8)
Advanced Micronutrient Products
Bekaert North America Management
Cameron Chemical
Charter Manufacturing
Danaher
Show all 8
Kemira Water Solutions
Keystone Consolidated Industries
Sabin Metal
EPA-registered importers (7)
Venator Materials Plc · GB United Kingdom
Haifa North America
Jost Chemical
Kronos Worldwide
Valagro/Syngenta Biologicals
Show all 7
Valudor Products
Venator Materials

Why It Matters

Sectors
FoodPaper & PrintingCore ChemicalsHealthEnergyMetals & MiningWaterTextilesAgricultureConstruction
Downstream Uses

Appears in 6 drug and cosmetic product listings (FDA).

  • •Ferrum Sulphuricum
  • •Ferrous Sulfate
  • •Bio Electrolyte
  • •Recovatone
  • •Multi-Vitamin Drops with Fluoride and Iron
  • •Ferrum Quartz
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 7 sectors as 7 functional roles.

  • •Intermediate in Other (100%)Processing as a reactant
  • •Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in All Other Basic Inorganic Chemical Manufacturing (100%)Processing—repackaging
  • •Cloud-point depressant in Utilities (90%)Processing—incorporation into formulation, mixture, or reaction product
  • •Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and Hunting (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Flocculating agent in Utilities (100%)Use—non-incorporative activities
  • •Deodorizer in Utilities (90%)Use—non-incorporative activities
  • •Solids separation (precipitating) agent, not otherwise specified in Utilities (10%)Use—non-incorporative activities
  • •Catalyst in Synthetic Dye and Pigment Manufacturing (100%)Processing as a reactant
  • •Solids separation (precipitating) agent, not otherwise specified in Paper Manufacturing (3%)Processing—incorporation into formulation, mixture, or reaction product
  • •Deodorizer in Agriculture, Forestry, Fishing and Hunting (30%)Use—non-incorporative activities

Chemical Identity

CAS7720-78-7
PubChem CID24393
DTXSIDDTXSID0029688
FormulaFeO4S
Mol. Weight151.91 g/mol
SMILES[O-]S(=O)(=O)[O-].[Fe+2]

Data Sources

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Brief citations

Iron(II) sulfate (CAS 7720-78-7) https://chemicalindependence.com/chemical/7720-78-7/ EPA CompTox (DSSTox): DTXSID0029688. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0029688 PubChem: 24393. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24393 EPA Chemical Data Reporting: 7720-78-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7720-78-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283329 for CAS 7720-78-7. Reporting year: 2024. https://usatrade.census.gov/