# Sodium aminotris(methylenephosphonate) (CAS 20592-85-2)

CAS: 20592-85-2
PubChem CID: 23687322
InChIKey: RCUMDGGJOOTRBS-UHFFFAOYSA-M
Wikidata: Q27272573
Molecular formula: C₃H₈NNa₄O₉P₃
Molar mass: 321.03 g/mol
IUPAC: sodium [bis(phosphonomethyl)amino]methyl-hydroxyphosphinate
SMILES: C(N(CP(=O)(O)O)CP(=O)(O)[O-])P(=O)(O)O.[Na+]
InChI: InChI=1S/C3H12NO9P3.Na/c5-14(6,7)1-4(2-15(8,9)10)3-16(11,12)13;/h1-3H2,(H2,5,6,7)(H2,8,9,10)(H2,11,12,13);/q;+1/p-1
PSA: 179 A^2
Hydrogen bond donors: 5
Hydrogen bond acceptors: 10
Rotatable bonds: 6
Heavy atoms: 17
3D structure: 28 atoms, 27 bonds

## About the compound

Sodium aminotris(methylenephosphonate) (CAS 20592-85-2) is a chemical compound registered under CAS number 20592-85-2. Molecular formula: C₃H₈NNa₄O₉P₃. Molar mass: 321.03 g/mol. The full systematic IUPAC name is: sodium [bis(phosphonomethyl)amino]methyl-hydroxyphosphinate. The molecule contains 28 atoms connected by 27 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/molekula/20592-85-2/


## Synonyms

  - 20592-85-2
  - Sodium aminotris(methylenephosphonate)
  - 9HON9B633X
  - Sodium nitrilotrimethylenephosphonate
  - Tris(phosphonomethyl)amine sodium salt
  - UNII-9HON9B633X
  - Sodium(nitrilotris(methylene))trisphosphonate
  - 1884388-64-0
  - Phosphonic acid, (nitrilotris(methylene))tris-, sodium salt
  - Nitrilotri(methylenephosphonic acid) sodium salt
  - Phosphonic acid, [nitrilotris(methylene)]tris-, sodium salt
  - EINECS 243-900-0

## Available in the shop

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## Data sources

  - PubChem CID 23687322: https://pubchem.ncbi.nlm.nih.gov/compound/23687322
  - Wikidata: https://www.wikidata.org/wiki/Q27272573
  - NIST WebBook: https://webbook.nist.gov/cgi/cbook.cgi?ID=20592-85-2
  - ChEMBL: https://www.ebi.ac.uk/chembl/g/#search_results/all/query=20592-85-2

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Last updated: 2026-09-03
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