Database/Chelating/Trisodium Ethylenediamine Disuccinate
Mostly petroleum · ISO 16128

Is Trisodium Ethylenediamine Disuccinate natural?

Mostly not. The chelating backbone is petrochemical; only the sodium counter-ions are mineral origin, giving a small natural fraction consistent with how EDTA salts are scored.

INCI nameTrisodium Ethylenediamine Disuccinate
CAS20846-91-7
FormulaC10H13N2Na3O8 · 358.19 Da
FunctionChelating
FeedstockEthylenediamine reacted with maleic anhydride, neutralised with sodium…

How we scored it

C10H13N2Na3O8 359 Da: three sodium counter-ions 69 Da are mineral origin; the EDDS backbone 290 Da (ethylenediamine + maleic-anhydride succinates) is petrochemical → 69 / 359 = 0.19.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

How it’s made

Aza-Michael addition of ethylenediamine to maleate (one arm drawn). The film draws the key step and names the steps after it. Each curved arrow moves one electron pair, and the film ends on the score above.

Where it comes from

Ethylenediamine reacted with maleic anhydride, neutralised with sodium hydroxide. Bio-based succinate grades would raise the value to about 0.5.

In plain English

A chelating agent that binds trace metal ions to keep formulas stable and prevent them degrading fragrance or colour. It is manufactured synthetically from ethylenediamine and maleic acid, both petrochemical building blocks.

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Structure

2D structure of Trisodium Ethylenediamine Disuccinate

trisodium;(2S)-2-[2-[[(1S)-1-carboxy-2-carboxylatoethyl]amino]ethylamino]butanedioate

PubChem CID 73555305 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Trisodium Ethylenediamine Disuccinate. PubChem CID 73555305. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3TRISODIUM ETHYLENEDIAMINE DISUCCINATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4TRISODIUM ETHYLENEDIAMINE DISUCCINATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=TRISODIUM%20ETHYLENEDIAMINE%20DISUCCINATE