Database/Emulsifying Surfactant/PEG-8 Dioleate
Mostly natural · ISO 16128

Is PEG-8 Dioleate natural?

Mostly. Oleic acid is natural; the 8-unit ethylene oxide backbone is petrochemical.

INCI namePEG-8 Dioleate
CAS9005-07-6
FunctionEmulsifying Surfactant
FeedstockDiester of oleic acid (vegetable oil) with octaethylene…

How we scored it

2×oleoyl(531) natural; octaethylene glycol backbone(370-2H=368) petrochemical; supplied formula matched n=1 not 8, recalculated; 531/899=0.59.
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

Diester of oleic acid (vegetable oil) with octaethylene glycol from petrochemical ethylene oxide. No alternative route for the glycol portion.

In plain English

An emulsifier made from oleic acid, a natural vegetable-oil fatty acid, combined with a short synthetic petrochemical glycol chain.

CosIng definition: Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxo-9-octadecenyl)-.omega.-[(1-oxo-9-octadecenyl)oxy]-, (Z,Z)- (8 mol EO average molar ratio)

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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. 2PEG-8 DIOLEATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3PEG-8 DIOLEATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PEG-8%20DIOLEATE