Database/Emollient/Isostearyl Isononanoate
Mostly natural · ISO 16128

Is Isostearyl Isononanoate natural?

Mostly. Isostearyl alcohol traces to natural oleic-acid isomerisation; isononanoic acid is a synthetic oxo-process acid from petrochemical olefins.

INCI nameIsostearyl Isononanoate
CAS90967-66-1
FormulaC27H54O2 · 410.7 Da
FunctionEmollient · Hair Conditioning
FeedstockThe isostearyl portion is typically made by isomerising…

How we scored it

Isostearyl alcohol (oleochemical, natural, 269 Da) esterified with isononanoic acid (petrochemical oxo-acid, 141 Da); 269/410 = 0.66
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

The isostearyl portion is typically made by isomerising and hydrogenating oleic acid from vegetable oil (oleochemical route, supplier note: some fatty alcohols can be Ziegler/oxo-derived). Isononanoic acid is made industrially from petrochemical octene via the oxo process.

In plain English

A lightweight emollient ester that gives skin and hair a smooth, non-greasy feel. Part of it comes from plant-oil fatty alcohol; part comes from a synthetic petrochemical acid.

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Structure

2D structure of Isostearyl Isononanoate

16-methylheptadecyl 3,5,5-trimethylhexanoate

PubChem CID 19704608 ↗

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. 2Isostearyl Isononanoate. PubChem CID 19704608. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ISOSTEARYL ISONONANOATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ISOSTEARYL ISONONANOATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ISOSTEARYL%20ISONONANOATE