Database/Emulsifying Surfactant/PEG-3 Dioleate
Mostly natural · ISO 16128

Is PEG-3 Dioleate natural?

Mostly. Two oleic-acid esters are oleochemical; the short 3-unit ethylene-oxide bridge is petrochemical and is the minority of the mass.

INCI namePEG-3 Dioleate
CAS9005-07-6
FormulaC42H78O6 · 679.1 Da
FunctionEmulsifying Surfactant
FeedstockMade by esterifying oleic acid onto both ends…

How we scored it

2x oleoyl (natural, 530.9 Da) + triethylene-glycol bridge less 2H (petrochemical, 148.2 Da) = 679.1 Da, matching the given MW; 530.9/679.1=0.78.
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

Made by esterifying oleic acid onto both ends of a short PEG-3 (triethylene glycol) chain from petrochemical ethylene oxide. Formula matches the stated 3 mol EO; no significant alternative route.

In plain English

An emulsifier for blending oil and water. Made from a plant- or animal-fat fatty acid attached to a short synthetic glycol chain, which here is the smaller part of its weight.

CosIng definition: Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxo-9-octadecenyl)-.omega.-[(1-oxo-9-octadecenyl)oxy]-, (Z,Z)- (3 mol EO average molar ratio)

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Structure

2D structure of PEG-3 Dioleate

2-[2-[2-[(Z)-octadec-9-enoyl]oxyethoxy]ethoxy]ethyl (Z)-octadec-9-enoate

PubChem CID 119026217 ↗

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-3 Dioleate. PubChem CID 119026217. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3PEG-3 DIOLEATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4PEG-3 DIOLEATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PEG-3%20DIOLEATE