Database/Antistatic/Sodium Stearoamphoacetate
Mostly natural · ISO 16128

Is Sodium Stearoamphoacetate natural?

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

INCI nameSodium Stearoamphoacetate
CAS68298-17-9
FormulaC24H47N2NaO4 · 450.6 Da
FunctionAntistatic · Cleansing
FeedstockC18 fatty acid condensed with aminoethylethanolamine and alkylated…

How we scored it

Sodium Stearoamphoacetate C24H47N2NaO4 450.6 Da: C18 acyl C18H35O 267.5 Da (oleochemical) + Na 23.0 Da (mineral) = 290.5 Da natural; aminoethylethanolamine backbone and the carboxymethyl (chloroacetate) arm petrochemical → 0.64. 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 gentle, antistatic cleansing ingredient made from stearic acid (a natural fatty acid) combined with synthetic petrochemical building blocks. Used in shampoos for foam and conditioning.

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Structure

2D structure of Sodium Stearoamphoacetate

sodium 2-[2-hydroxyethyl-[2-(octadecanoylamino)ethyl]amino]acetate

PubChem CID 23668680 ↗

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 Stearoamphoacetate. PubChem CID 23668680. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3SODIUM STEAROAMPHOACETATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4SODIUM STEAROAMPHOACETATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20STEAROAMPHOACETATE