Database/Antistatic/Undecylenamidopropyl Betaine
Mostly natural · ISO 16128

Is Undecylenamidopropyl Betaine natural?

Mostly. Undecylenic acid from castor oil pyrolysis supplies the fatty chain; the amidopropyl-dimethylglycine head comes from petrochemical DMAPA and chloroacetate.

INCI nameUndecylenamidopropyl Betaine
CAS98510-75-9
FormulaC18H34N2O3 · 326.5 Da
FunctionAntistatic · Cleansing
FeedstockUndecylenic acid, obtained by pyrolysis of castor oil's…

How we scored it

Undecylenoyl (castor-oil derived, natural) C11H19O 167 Da; DMAPA + chloroacetate betaine backbone (petrochemical) 159 Da -> 167/326.5=0.51.
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

Undecylenic acid, obtained by pyrolysis of castor oil's ricinoleic acid, is amidated with petrochemical dimethylaminopropylamine (DMAPA) then quaternized with sodium chloroacetate to form the betaine. This is the standard commercial route.

In plain English

A mild, foam-boosting surfactant used in shampoos and cleansers. It combines undecylenic acid from castor oil with a petrochemical amine and acetate group.

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Structure

2D structure of Undecylenamidopropyl Betaine

2-[dimethyl-[3-(undec-10-enoylamino)propyl]azaniumyl]acetate

PubChem CID 9949269 ↗

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. 2Undecylenamidopropyl Betaine. PubChem CID 9949269. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3UNDECYLENAMIDOPROPYL BETAINE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4UNDECYLENAMIDOPROPYL BETAINE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=UNDECYLENAMIDOPROPYL%20BETAINE