Database/Chelating/Tetrapotassium Etidronate
Mostly petroleum · ISO 16128

Is Tetrapotassium Etidronate natural?

Mostly not. Potassium counter-ions are mineral and natural; the diphosphonate backbone is fully synthetic organophosphorus chemistry.

INCI nameTetrapotassium Etidronate
CAS14860-53-8
FormulaC2H4K4O7P2 · 358.39 Da
FunctionChelating
FeedstockMade by reacting acetic acid/anhydride with phosphorus trichloride,…

How we scored it

K4 156.4 Da (mineral, natural) + etidronate core C2H4O7P2 202.0 Da (synthetic) = 358.39 Da. 156.4/358.39 = 0.44.
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.

Where it comes from

Made by reacting acetic acid/anhydride with phosphorus trichloride, then neutralising with potassium hydroxide. The C-P bonds have no natural-origin route.

In plain English

Tetrapotassium etidronate is a chelating ingredient that binds trace metals in a formula. Its backbone is made through synthetic industrial chemistry, with potassium added to neutralise it.

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Structure

2D structure of Tetrapotassium Etidronate

tetrapotassium;1,1-diphosphonatoethanol

PubChem CID 26938 ↗

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. 2Tetrapotassium Etidronate. PubChem CID 26938. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3TETRAPOTASSIUM ETIDRONATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4TETRAPOTASSIUM ETIDRONATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=TETRAPOTASSIUM%20ETIDRONATE