Database/Emulsifying Surfactant/PEG-10 Dioleate
Mostly natural · ISO 16128

Is PEG-10 Dioleate natural?

Mostly. Polyethylene glycol diester of oleic acid. Both fatty-acid chains are natural; the 10-unit ethylene-oxide chain is petrochemical.

INCI namePEG-10 Dioleate
CAS9005-07-6
FunctionEmulsifying Surfactant
FeedstockVegetable oleic acid esterified at both ends of…

How we scored it

PEG-10 Dioleate: two oleoyl fragments 2×C18H33O 530.9 Da (natural) on a PEG-10 chain; PEG-10 458.5 Da + 2×oleic acid 564.9 Da − 2 H2O = 987.5 Da → 0.54. The ester oxygens go with the PEG chain, as for PEG-4 Dilaurate.
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 oleic acid esterified at both ends of polyethylene glycol (about 10 ethylene-oxide units).

In plain English

An emulsifier combining plant-based oleic acid with a synthetic polyethylene glycol chain, helping blend oil and water together in creams and lotions.

CosIng definition: Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxo-9-octadecenyl)-.omega.-[(1-oxo-9-octadecenyl)oxy]-, (Z,Z)- (10 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-10 DIOLEATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3PEG-10 DIOLEATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PEG-10%20DIOLEATE