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Heptasodium diethylenetriaminepentamethylenephosphonate

CAS 68155-78-2

Used in 3 industrial sectors tracked by the EPA.

Molecular structure of 68155-78-2
7 Na⁺
US production31.9K lb
Import volumeZero
Import dependency0%
Top sourceNo public record

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 31.9K lb · Imports Zero
2019
US production 254.2K lb · Imports 423.0K lb

HS customs code 293149 covers 114 tracked chemicals in total. US Census does not break out this chemical's share, so the country-of-origin mix is not available. EPA CDR reports import dependency at the chemical level separately, shown above.

EPA-registered manufacturers (3)
Italmatch Chemicals Spa · IT Italy
Italmatch Usa
Zschimmer&Schwarz

Why It Matters

Sectors
EnergyMetals & MiningCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 4 sectors as 3 functional roles.

  • •Absorbent in Oil and Gas Drilling, Extraction, and Support activities (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Lubricating agent in Petroleum Lubricating Oil and Grease Manufacturing (30%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chelating agent in All Other Chemical Product and Preparation Manufacturing (65%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chelating agent in Primary Metal Manufacturing (5%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS68155-78-2
PubChem CID15361742
DTXSIDDTXSID9029778
FormulaC9H21N3Na7O15P5
Mol. Weight727.07 g/mol
SMILESC(CN(CP(=O)(O)[O-])CP(=O)([O-])[O-])N(CCN(CP(=O)(O)[O-])CP(=O)([O-])[O-])CP(=O)(O)[O-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+]

Data Sources

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Brief citations

Heptasodium diethylenetriaminepentamethylenephosphonate (CAS 68155-78-2) https://chemicalindependence.com/chemical/68155-78-2/ EPA CompTox (DSSTox): DTXSID9029778. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9029778 PubChem: 15361742. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/15361742 EPA Chemical Data Reporting: 68155-78-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 68155-78-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting