Database/Cleansing Surfactant/PEG-75 Oleate
Mostly petroleum · ISO 16128

Is PEG-75 Oleate natural?

Mostly not. Polyethylene glycol ester of oleic acid. The fatty-acid chain is natural; the 75-unit ethylene-oxide chain is petrochemical.

INCI namePEG-75 Oleate
CAS9004-96-0
FunctionCleansing Surfactant
FeedstockOleic acid esterified or ethoxylated with about 75…

How we scored it

PEG-75 Oleate: oleoyl fragment C18H33O 265.5 Da (natural) of oleic acid 282.5 Da + 75 EO 3304.0 Da = 3586.4 Da → 0.07. The ester oxygen and chain-end hydrogen are counted with the PEG chain, as for PEG-8 Laurate and PEG-8 Oleate.
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

Oleic acid esterified or ethoxylated with about 75 mol of ethylene oxide.

In plain English

A cleansing surfactant made from plant oleic acid reacted with about 75 units of ethylene oxide. The long synthetic chain makes it mostly petrochemical by mass despite the natural starting oil.

CosIng definition: Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxo-9-octadecenyl)-.omega.-hydroxy-, (Z)- (75 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-75 OLEATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3PEG-75 OLEATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PEG-75%20OLEATE