Database/Cleansing/Disodium Oleamido PEG-2 Sulfosuccinate
Mostly natural · ISO 16128

Is Disodium Oleamido PEG-2 Sulfosuccinate natural?

Mostly. Oleic acid is natural, and the sulfonate and sodium ions are mineral, so all three count as natural origin in line with the other sulfosuccinate entries. The two-unit ethylene oxide spacer and the maleic-anhydride-derived succinate backbone are petrochemical.

INCI nameDisodium Oleamido PEG-2 Sulfosuccinate
CAS68227-80-5
FormulaC26H45NNa2O9S · 593.7 Da
FunctionCleansing · Foam Boosting Surfactant
FeedstockVegetable-oil oleic acid is condensed with an ethanolamine,…

How we scored it

The supplied formula C26H45NNa2O9S weighs 593.69 Da. Natural origin is the oleoyl group C18H33O (265.46 Da) plus the sulfonate SO3 (80.06 Da) plus the two sodium counter-ions (45.98 Da) = 391.50 Da, against a petrochemical amide nitrogen, PEG-2 spacer and succinate core of 202.19 Da. So 391.50/593.69 = 0.66.
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

Vegetable-oil oleic acid is condensed with an ethanolamine, ethoxylated with two moles of ethylene oxide, esterified with sulfosuccinic anhydride from maleic anhydride and neutralised with sodium hydroxide.

In plain English

A mild foam-boosting surfactant made from vegetable-oil-derived oleic acid combined with synthetic petrochemical building blocks. Used in shampoos and cleansers to help other surfactants clean gently.

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Structure

2D structure of Disodium Oleamido PEG-2 Sulfosuccinate

disodium;4-[2-[2-[[(Z)-octadec-9-enoyl]amino]ethoxy]ethoxy]-4-oxo-3-sulfonatobutanoate

PubChem CID 6436608 ↗

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. 2Disodium Oleamido PEG-2 Sulfosuccinate. PubChem CID 6436608. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3DISODIUM OLEAMIDO PEG-2 SULFOSUCCINATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4DISODIUM OLEAMIDO PEG-2 SULFOSUCCINATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=DISODIUM%20OLEAMIDO%20PEG-2%20SULFOSUCCINATE