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Pentasodium nitrilotris(methylenephosphonate)

CAS 2235-43-0

Used in 5 industrial sectors tracked by the EPA.

Molecular structure of 2235-43-0
5 Na⁺
US production994.5K lb
Import value, 2024$598M
Import volumeCBI
Top sourceChina 89%

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. 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 293149 · basket

EPA reports by year
2023
US production 994.5K lb · Imports Confidential
2019
US production 474.0K lb · Imports 112.9K lb

These shares come from HS customs code 293149, which covers 114 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 89%ChinaIN 4%IndiaCA 3%CanadaDE 2%GermanyAR 1%Argentina
EPA-registered manufacturers (4)
Italmatch Chemicals Spa · IT Italy
Hydrite Chemical
Italmatch Usa
Zschimmer&Schwarz
Domestic parents -- activity not disclosed (1)
Brenntag
EPA-registered importers (3)
Italmatch Chemicals Spa · IT Italy
Norman, Fox &
Solenis

Why It Matters

Sectors
FoodEnergyMetals & MiningConsumer ProductsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 8 sectors as 5 functional roles.

  • •Corrosion inhibitor in Food, beverage, and tobacco product manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chelating agent in Food, beverage, and tobacco product manufacturing (100%)Use—non-incorporative activities
  • •Anti-scaling agent in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Anti-scaling agent in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
  • •Corrosion inhibitor in Oil and Gas Drilling, Extraction, and Support activities (1%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chelating agent in Primary Metal Manufacturing (14%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chelating agent in All Other Chemical Product and Preparation Manufacturing (58%)Processing—incorporation into formulation, mixture, or reaction product
  • •Lubricating agent in Petroleum Lubricating Oil and Grease Manufacturing (16%)Processing—incorporation into formulation, mixture, or reaction product
  • •Dispersing agent in Miscellaneous Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
  • •Dispersing agent in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (2%)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
  • •Corrosion inhibitor in All Other Chemical Product and Preparation Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product
  • •Anti-scaling agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS2235-43-0
PubChem CID16697
DTXSIDDTXSID8029232
FormulaC3H7NNa5O9P3
Mol. Weight408.96 g/mol
SMILESC(N(CP(=O)([O-])[O-])CP(=O)([O-])[O-])P(=O)(O)[O-].[Na+].[Na+].[Na+].[Na+].[Na+]

Data Sources

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Brief citations

Pentasodium nitrilotris(methylenephosphonate) (CAS 2235-43-0) https://chemicalindependence.com/chemical/2235-43-0/ EPA CompTox (DSSTox): DTXSID8029232. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8029232 PubChem: 16697. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/16697 EPA Chemical Data Reporting: 2235-43-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 2235-43-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293149 for CAS 2235-43-0. Reporting year: 2024. https://usatrade.census.gov/