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Ammonium iron(III) oxalate

CAS 2944-67-4

Ethanedioic acid, ammonium iron(3+) salt (3:3:1)

Molecular structure of 2944-67-4
3 NH₃ · 1 Fe
US productionNot reported
Import value, 2024$11M
Top sourceSpain 45%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291711 · basket

These shares come from HS customs code 291711, which covers 29 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
ES 45%SpainCN 25%ChinaIN 10%IndiaTW 6%TaiwanIT 6%Italy

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS2944-67-4
PubChem CIDNot recorded
DTXSIDDTXSID80890522
FormulaC6H9FeN3O12
Mol. Weight370.995 g/mol
SMILESN.N.N.[Fe].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O

Data Sources

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Brief citations

Ammonium iron(III) oxalate (CAS 2944-67-4) https://chemicalindependence.com/chemical/2944-67-4/ EPA TSCA Inventory: CAS 2944-67-4. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 291711 for CAS 2944-67-4. Reporting year: 2024. https://usatrade.census.gov/