P,P′-[[[2-[(2-Hydroxyethyl)(phosphonomethyl)amino]ethyl]imino]bis(methylene)]bis[phosphonic acid]

CAS 32685-03-3

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

US productionCBI

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

Top sourceNo public record

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.

Where It Comes From

EPA reports by year

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

EPA-registered manufacturers (4)

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

Ces Energy Solutions · CA Canada

Italmatch Chemicals Spa · IT Italy

Aes Holdings

Italmatch Usa

Why It Matters

Sectors

EnergyCore 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 2 sectors as 2 functional roles.

•Corrosion inhibitor in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Anti-scaling agent in Oil and Gas Drilling, Extraction, and Support activities (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS32685-03-3

PubChem CID9908179

DTXSIDDTXSID90861304

FormulaC7H21N2O10P3

Mol. Weight386.17 g/mol

SMILESC(CN(CP(=O)(O)O)CP(=O)(O)O)N(CCO)CP(=O)(O)O

Data Sources

EPA CompTox (DSSTox) · DTXSID90861304Retrieved 2026-04-06
PubChem · compound 9908179Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

P,P′-[[[2-[(2-Hydroxyethyl)(phosphonomethyl)amino]ethyl]imino]bis(methylene)]bis[phosphonic acid] (CAS 32685-03-3) https://chemicalindependence.com/chemical/32685-03-3/ EPA CompTox (DSSTox): DTXSID90861304. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID90861304 PubChem: 9908179. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/9908179 EPA Chemical Data Reporting: 32685-03-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 32685-03-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting