Database/Emulsifying Surfactant/PEG-32 Dioleate
Mostly petroleum · ISO 16128

Is PEG-32 Dioleate natural?

Mostly not. Two oleic-acid esters are oleochemical; the much longer 32-unit ethylene-oxide chain is petrochemical and dominates the total mass.

INCI namePEG-32 Dioleate
CAS9005-07-6
FunctionEmulsifying Surfactant
FeedstockMade by esterifying oleic acid onto both ends…

How we scored it

2x oleoyl (natural, 530.9 Da) + PEG-32 chain less 2H (petrochemical EO, 1425.7 Da) = 1956.7 Da; 530.9/1956.7=0.27. Listed formula (591 Da) is the n=1 homolog; used stated 32 mol EO.
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 longer PEG-32 chain built from petrochemical ethylene oxide. No significant alternative route.

In plain English

An emulsifier for blending oil and water in formulas. A plant- or animal-fat fatty acid is attached to a longer synthetic polyethylene glycol chain, which makes up most of its weight.

CosIng definition: Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxo-9-octadecenyl)-.omega.-[(1-oxo-9-octadecenyl)oxy]-, (Z,Z)- (32 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-32 DIOLEATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3PEG-32 DIOLEATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PEG-32%20DIOLEATE