Ethylenediaminetetracetic acid, ferric ammonium salt

CAS 21265-50-9

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

Molecular structure of 21265-50-9 — 1 Fe³⁺ · 1 NH₄⁺

US productionCBI

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

Import value, 2024$503M

Top sourceChina 25%

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 292249 · basket

EPA reports by year

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

These shares come from HS customs code 292249, which covers 170 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 25%ChinaIN 17%IndiaSG 13%SingaporeIT 9%ItalyCH 7%Switzerland

Argentina
Poland
Portugal
Lithuania
Ukraine
Finland
Spain
Egypt
Sweden
Austria
Israel
Latvia
Belgium
Ireland
Mexico
Australia
Peru
Czech Republic
Colombia
Hong Kong

EPA-registered manufacturers (5)

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

Hawkins

Hydrite Chemical

Nachurs Alpine Solutions

The Andersons

Wilbur-Ellis Holdings Ii

Why It Matters

Sectors

AgricultureConsumer ProductsCore Chemicals

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 4 sectors as 2 functional roles.

•Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Ion exchange agent in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
•Soil amendments (fertilizers) in Wholesale and Retail Trade (100%)Processing—incorporation into formulation, mixture, or reaction product
•Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and Hunting (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS21265-50-9

PubChem CID88842

DTXSIDDTXSID9027815

FormulaC10H16FeN3O8

Mol. Weight362.09 g/mol

SMILESC(CN(CC(=O)[O-])CC(=O)[O-])N(CC(=O)[O-])CC(=O)[O-].[NH4+].[Fe+3]

Data Sources

EPA CompTox (DSSTox) · DTXSID9027815Retrieved 2026-04-06
PubChem · compound 88842Retrieved 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

Ethylenediaminetetracetic acid, ferric ammonium salt (CAS 21265-50-9) https://chemicalindependence.com/chemical/21265-50-9/ EPA CompTox (DSSTox): DTXSID9027815. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9027815 PubChem: 88842. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/88842 EPA Chemical Data Reporting: 21265-50-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 21265-50-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292249 for CAS 21265-50-9. Reporting year: 2024. https://usatrade.census.gov/