# Hexamethylenediamine tetra(methylenephosphonic acid), potassium salt

CAS: 38820-59-6
PubChem CID: 197181
InChIKey: FZMFRKUYWHTRFD-UHFFFAOYSA-J
Wikidata: Q126600983
Molecular formula: C10H24KN2O12P4-3
Molar mass: 527.30 g/mol
IUPAC: potassium [6-[bis[[hydroxy(oxido)phosphoryl]methyl]amino]hexyl-[[hydroxy(oxido)phosphoryl]methyl]amino]methyl-hydroxyphosphinate
SMILES: C(CCCN(CP(=O)(O)[O-])CP(=O)(O)[O-])CCN(CP(=O)(O)[O-])CP(=O)(O)[O-].[K+]
InChI: InChI=1S/C10H28N2O12P4.K/c13-25(14,15)7-11(8-26(16,17)18)5-3-1-2-4-6-12(9-27(19,20)21)10-28(22,23)24;/h1-10H2,(H2,13,14,15)(H2,16,17,18)(H2,19,20,21)(H2,22,23,24);/q;+1/p-4
PSA: 248 A^2
Hydrogen bond donors: 4
Hydrogen bond acceptors: 14
Rotatable bonds: 15
Heavy atoms: 29
3D structure: 53 atoms, 51 bonds

## About the compound

Hexamethylenediamine tetra(methylenephosphonic acid), potassium salt is a chemical compound registered under CAS number 38820-59-6. Molecular formula: C10H24KN2O12P4-3. Molar mass: 527.30 g/mol. The full systematic IUPAC name is: potassium [6-[bis[[hydroxy(oxido)phosphoryl]methyl]amino]hexyl-[[hydroxy(oxido)phosphoryl]methyl]amino]methyl-hydroxyphosphinate. The molecule contains 53 atoms connected by 51 chemical bonds. 
Chemical data comes from the PubChem (NIH), ChEMBL (EBI) and NIST WebBook databases. GHS statement translations comply with the CLP Regulation (EC 1272/2008). Interactive 3D model and 2D skeleton available at: https://molgod.org/molecule/38820-59-6/


## Synonyms

  - Hexamethylenediamine tetra(methylenephosphonic acid), potassium salt
  - RefChem:1086559
  - 38820-59-6
  - Phosphonic acid, (1,6-hexanediylbis(nitrilobis(methylene)))tetrakis-, potassium salt
  - HDTMP hexapotassium salt
  - Dequest 2054
  - Phosphonic acid, [1,6-hexanediylbis[nitrilobis(methylene)]]tetrakis-,potassium salt
  - EINECS 254-135-7
  - Dequest 2054 deflocculant and sequestrant
  - (1,6-Hexanediylbis(nitrilobis(methylene)))tetrakisphosphonic acid potassium salt
  - Hexamethylenediaminetetra(methylenephosphonic acid) xpotassium salt
  - EC 254-135-7

## Data sources

  - PubChem CID 197181: https://pubchem.ncbi.nlm.nih.gov/compound/197181
  - Wikidata: https://www.wikidata.org/wiki/Q126600983
  - NIST WebBook: https://webbook.nist.gov/cgi/cbook.cgi?ID=38820-59-6
  - ChEMBL: https://www.ebi.ac.uk/chembl/g/#search_results/all/query=38820-59-6

---
Standalone HTML page: https://molgod.org/molecule/38820-59-6/
Markdown version: https://molgod.org/molecule/38820-59-6.md
JSON API: https://molgod.org/wp-json/molgod/v1/molecule/38820-59-6
Last updated: 2026-10-17
Generator: MOL-GOD v3.12.33