Iron(II) sulfate heptahydrate

CAS 7782-63-0

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

Molecular structure of 7782-63-0 — 7 H₂O · 1 Fe²⁺

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

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

Country of origin for US imports, from Census customs data (2024).

MX 46%MexicoCN 19%ChinaCA 11%CanadaIN 9%IndiaFI 4%Finland

Italy
South Africa
Colombia
United Kingdom
Peru
Czech Republic
Taiwan
Hong Kong
Sweden
Belgium
Singapore
Netherlands
Hungary
Switzerland

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.

Wilbur-Ellis Holdings Ii

Why It Matters

Sectors

Agriculture

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

•Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical ManufacturingNot Known or Reasonably Ascertainable

Chemical Identity

CAS7782-63-0

PubChem CID62662

DTXSIDDTXSID9040344

FormulaFeH14O11S

Mol. Weight278.02 g/mol

SMILESO.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[Fe+2]

Data Sources

EPA CompTox (DSSTox) · DTXSID9040344Retrieved 2026-04-06
PubChem · compound 62662Retrieved 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

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Brief citations

Iron(II) sulfate heptahydrate (CAS 7782-63-0) https://chemicalindependence.com/chemical/7782-63-0/ EPA CompTox (DSSTox): DTXSID9040344. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9040344 PubChem: 62662. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/62662 EPA Chemical Data Reporting: 7782-63-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7782-63-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283329 for CAS 7782-63-0. Reporting year: 2024. https://usatrade.census.gov/