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Sodium trimetaphosphate

CAS 7785-84-4

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

Molecular structure of 7785-84-4
3 Na⁺
US productionCBI
Import value, 2024$95M
Top sourceCanada 30%

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 283539 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 283539, which covers 21 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CA 30%CanadaDE 19%GermanyMY 17%MalaysiaCN 13%ChinaIT 9%Italy
EPA-registered manufacturers (1)
Prayon
Domestic parents -- activity not disclosed (2)
Icl Specialty Products North America
Wilbur-Ellis Holdings Ii
EPA-registered importers (2)
Innophos Incorporated
Silver Fern Chemical

Why It Matters

Sectors
FoodConstructionMetals & MiningConsumer Products
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 5 sectors as 4 functional roles.

  • •Plating agent in Fabricated Metal Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Corrosion inhibitor in Fabricated Metal Product Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing) (50%)Processing as a reactant
  • •Polymerization promoter in Food, beverage, and tobacco product manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Miscellaneous ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Corrosion inhibitor in Soap, Cleaning Compound, and Toilet Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS7785-84-4
PubChem CID24579
DTXSIDDTXSID7052789
FormulaNa3O9P3
Mol. Weight305.89 g/mol
SMILES[O-]P1(=O)OP(=O)(OP(=O)(O1)[O-])[O-].[Na+].[Na+].[Na+]

Data Sources

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Brief citations

Sodium trimetaphosphate (CAS 7785-84-4) https://chemicalindependence.com/chemical/7785-84-4/ EPA CompTox (DSSTox): DTXSID7052789. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7052789 PubChem: 24579. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24579 EPA Chemical Data Reporting: 7785-84-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7785-84-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283539 for CAS 7785-84-4. Reporting year: 2024. https://usatrade.census.gov/