# Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium  (EDTMPS) (CAS 22036-77-7)

**CAS:** 22036-77-7  
**PubChem CID:** [162344864](https://pubchem.ncbi.nlm.nih.gov/compound/162344864)  
**Molecular formula:** C6H20N2NaO12P4  
**Molar mass:** 459.11 g/mol  
**SMILES:** `C(CN(CP(=O)(O)O)CP(=O)(O)O)N(CP(=O)(O)O)CP(=O)(O)O.[Na]`  
**InChIKey:** `YIPHIVFATQTYEL-UHFFFAOYSA-N`  
**InChI:** `InChI=1S/C6H20N2O12P4.Na/c9-21(10,11)3-7(4-22(12,13)14)1-2-8(5-23(15,16)17)6-24(18,19)20;/h1-6H2,(H2,9,10,11)(H2,12,13,14)(H2,15,16,17)(H2,18,19,20);`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| PSA | 237 Ų |
| Hydrogen bond donors | 8 |
| Hydrogen bond acceptors | 14 |
| Rotatable bonds | 11 |
| Heavy atoms | 25 |

## 3D structure

The molecule contains 45 atoms connected by 43 chemical bonds. Interactive 3D model available at: https://molgod.org/molekula/22036-77-7/

## Synonyms

- Sodium (ethylenediamine)tetramethylenephosphonate
- RefChem:886620
- 22036-77-7

## Available in the shop

[Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium  (EDTMPS) (CAS 22036-77-7) — Shandong Yuanlian](https://molgod.org/sds-cards/ethylene-diamine-tetra-methylene-phosphonic-acid-sodium-edtmps-cas-22036-77-7-shandong-yuanlian/)

## Data sources

- [PubChem CID 162344864](https://pubchem.ncbi.nlm.nih.gov/compound/162344864)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=22036-77-7)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=22036-77-7)

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*Last updated: 2026-09-02 · Generator: MOL-GOD v3.12.33*