Flag of the United StatesAmerican Chemical Independence

[[(Phosphonomethyl)imino]bis[6,1-hexanediylnitrilobis(methylene)]]tetrakis-phosphonic acid, sodium salt (1:x)

CAS 35657-77-3

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

Molecular structure of 35657-77-3
1 Na⁺
US productionCBI
Import value, 2024$6.7B
Import volumeZero
Top sourceJapan 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 293149, 382499 · basket

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

These shares come from HS customs code 293149, 382499, which covers 312 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
JP 30%JapanKR 25%South KoreaCN 12%ChinaDE 8%GermanyCA 6%Canada

Why It Matters

Sectors
Metals & Mining
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

  • •Anti-scaling agent in Mining (except Oil and Gas) and support activities (100%)Use—non-incorporative activities

Chemical Identity

CAS35657-77-3
PubChem CID161882
DTXSIDDTXSID1049720
FormulaC17H44N3NaO15P5+
Mol. Weight708.4 g/mol
SMILESC(CCCN(CP(=O)(O)O)CP(=O)(O)O)CCN(CCCCCCN(CP(=O)(O)O)CP(=O)(O)O)CP(=O)(O)O.[Na+]

Data Sources

← Back to Dashboard← Back to Metals & Mining

Brief citations

[[(Phosphonomethyl)imino]bis[6,1-hexanediylnitrilobis(methylene)]]tetrakis-phosphonic acid, sodium salt (1:x) (CAS 35657-77-3) https://chemicalindependence.com/chemical/35657-77-3/ EPA CompTox (DSSTox): DTXSID1049720. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1049720 PubChem: 161882. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/161882 EPA Chemical Data Reporting: 35657-77-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 35657-77-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293149,382499 for CAS 35657-77-3. Reporting year: 2024. https://usatrade.census.gov/