Silicon phosphate (Si3(PO4)4)

CAS 12037-47-7

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

Molecular structure of 12037-47-7 — 3 Si⁴⁺

US productionCBI

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

Import volume922.2K lb

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 922.2K lb
2019: US production Confidential · Imports Confidential

EPA-registered manufacturers (1)

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

Innophos Incorporated

EPA-registered importers (3)

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

Clariant International · CH Switzerland

Clariant

United Refining

Why It Matters

Sectors

EnergyMetals & MiningCore 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 5 sectors as 3 functional roles.

•Catalyst in Petroleum Refineries (100%)Processing as a reactant
•Catalyst in Petrochemical ManufacturingUse—non-incorporative activities
•Corrosion inhibitor in Fabricated Metal Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Corrosion inhibitor in Miscellaneous ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Processing aids, specific to petroleum production in All other Petroleum and Coal Products ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS12037-47-7

PubChem CID160971

DTXSIDDTXSID60872568

FormulaO16P4Si3

Mol. Weight464.14 g/mol

SMILES[O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[Si+4].[Si+4].[Si+4]

Data Sources

EPA CompTox (DSSTox) · DTXSID60872568Retrieved 2026-04-06
PubChem · compound 160971Retrieved 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

Silicon phosphate (Si3(PO4)4) (CAS 12037-47-7) https://chemicalindependence.com/chemical/12037-47-7/ EPA CompTox (DSSTox): DTXSID60872568. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID60872568 PubChem: 160971. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/160971 EPA Chemical Data Reporting: 12037-47-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 12037-47-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting