Database/Perfuming/Citronellyl Isobutyrate
Route-dependent · ISO 16128

Is Citronellyl Isobutyrate natural?

It depends. Citronellol is route-dependent; isobutyric acid is made by oxidising petrochemical isobutyraldehyde, as for the site's other isobutyrates.

INCI nameCitronellyl Isobutyrate
CAS97-89-2
FormulaC14H26O2 · 226.35 Da
FunctionPerfuming
FeedstockCitronellol (essential-oil isolate or synthetic) esterified with petrochemical…

Why the score varies

This ingredient is made commercially by more than one route, and ISO 16128 scores the feedstock actually used. Without a supplier certificate of origin the value cannot be claimed.

RouteFeedstockNOIShareNotes
natural citronellylcitronellyl of natural origin + isobutyric acid from petrochemical synthesis0.69Citronellyl fragment C10H19O 155.3/226.4 = 0.69.
syntheticcitronellyl and isobutyric acid both from petrochemical synthesis0.00No natural carbon.
Ask your supplier. A batch-specific certificate of origin or bio-based carbon test (ASTM D6866) settles which route applies.

How we scored it

Citronellyl Isobutyrate C14H26O2 226.4 Da: citronellyl fragment C10H19O 155.3 Da is natural only from an essential-oil, balsam or turpentine source; the isobutyric acid fragment 71.1 Da is petrochemical in every commercial route. Routes: natural citronellyl 0.69, synthetic 0.00. Headline shows the best route.
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

Citronellol (essential-oil isolate or synthetic) esterified with petrochemical isobutyric acid.

In plain English

A fruity fragrance ingredient made by joining a rose-scented alcohol with a short branched acid. It's mostly manufactured synthetically, with a small natural-origin alternative available.

Natural alternatives with the same function

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 Abies Alba Leaf Oil 100% natural origin

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 Abies Alba Needle Extract 100% natural origin

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 Abies Alba Needle Oil 100% natural origin

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 Abies Balsamea Needle Extract 100% natural origin

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Structure

2D structure of Citronellyl Isobutyrate

3,7-dimethyloct-6-enyl 2-methylpropanoate

PubChem CID 60985 ↗

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. 2Citronellyl Isobutyrate. PubChem CID 60985. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CITRONELLYL ISOBUTYRATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CITRONELLYL ISOBUTYRATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CITRONELLYL%20ISOBUTYRATE