Database/Cleansing/Sodium Isostearoamphopropionate
Mostly natural · ISO 16128

Is Sodium Isostearoamphopropionate natural?

Mostly. The fatty acyl chain and the sodium ion are natural; the amine backbone and the carboxyalkyl arm are petrochemical.

INCI nameSodium Isostearoamphopropionate
CAS68630-96-6
FormulaC25H48N2O3 · 424.7 Da
FunctionCleansing · Foaming
FeedstockC18 fatty acid condensed with aminoethylethanolamine and alkylated…

How we scored it

Sodium Isostearoamphopropionate C25H49N2NaO4 464.7 Da: C18 acyl C18H35O 267.5 Da (oleochemical) + Na 23.0 Da (mineral) = 290.5 Da natural; aminoethylethanolamine backbone and the carboxyethyl (acrylate) arm petrochemical → 0.63. Same method as Sodium Lauroamphoacetate.
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

C18 fatty acid condensed with aminoethylethanolamine and alkylated with a petrochemical carboxyalkylating agent.

In plain English

A mild, foam-boosting cleansing ingredient made from isostearic acid (a branched vegetable-derived fatty acid) combined with synthetic petrochemical building blocks. Used in shampoos and gentle cleansers.

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Structure

2D structure of Sodium Isostearoamphopropionate

3-[3-(2-hydroxyethyl)-2-(15-methylhexadecyl)-4,5-dihydroimidazol-3-ium-1-yl]propanoate

PubChem CID 73556512 ↗

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. 2Sodium Isostearoamphopropionate. PubChem CID 73556512. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3SODIUM ISOSTEAROAMPHOPROPIONATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4SODIUM ISOSTEAROAMPHOPROPIONATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20ISOSTEAROAMPHOPROPIONATE