Database/Antistatic/Isostearamidopropyl Ethyldimonium Ethosulfate
Mostly natural · ISO 16128

Is Isostearamidopropyl Ethyldimonium Ethosulfate natural?

Mostly. Isostearoyl comes from vegetable oleic acid and the sulfate is mineral; the aminopropyl-dimethylamine part and both ethyl groups come from petrochemical amines and ethylene.

INCI nameIsostearamidopropyl Ethyldimonium Ethosulfate
CAS67633-63-0
FormulaC27H58N2O5S · 522.8 Da
FunctionAntistatic · Hair Conditioning
FeedstockDominant route: isostearic acid (vegetable oleic dimer-acid co-product)…

How we scored it

Isostearoyl C18H35O 267.5 natural + sulfate SO4 96.1 mineral (ethosulfate) = 363.5; petrochemical aminopropyl, dimethyl and two ethyl groups 159.3; 363.5/522.8 = 0.70 (matches stearamidopropyl analogue).
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

Dominant route: isostearic acid (vegetable oleic dimer-acid co-product) amidated with dimethylaminopropylamine, then quaternised with diethyl sulfate made from ethylene and sulfuric acid. Alternative: none significant, since the quaternising agent fixes the counter-ion.

In plain English

A positively charged anti-static conditioning agent that helps hair feel smoother and easier to comb. It has a branched fatty chain (isostearic acid, from vegetable oil) on an ammonium head group made from petrochemicals, with ethyl sulfate as the counter-ion.

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Structure

2D structure of Isostearamidopropyl Ethyldimonium Ethosulfate

ethyl-dimethyl-[3-(16-methylheptadecanoylamino)propyl]azanium;ethyl sulfate

PubChem CID 105494 ↗

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. 2Isostearamidopropyl Ethyldimonium Ethosulfate. PubChem CID 105494. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ISOSTEARAMIDOPROPYL ETHYLDIMONIUM ETHOSULFATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ISOSTEARAMIDOPROPYL ETHYLDIMONIUM ETHOSULFATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ISOSTEARAMIDOPROPYL%20ETHYLDIMONIUM%20ETHOSULFATE