Database/Perfuming/Allyl Butyrate
Route-dependent · ISO 16128

Is Allyl Butyrate natural?

It depends. Butyric acid is made both by fermentation and from petrochemicals; allyl alcohol is petrochemical. Same treatment as Allyl Nonanoate.

INCI nameAllyl Butyrate
CAS2051-78-7
FormulaC7H12O2 · 128.17 Da
FunctionPerfuming
FeedstockButyric acid (fermentation or oxo synthesis) esterified with…

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 butyrylbutyryl of natural origin + allyl alcohol from petrochemical synthesis0.55Butyryl fragment C4H7O 71.1/128.2 = 0.55.
syntheticbutyryl and allyl alcohol 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

Allyl Butyrate C7H12O2 128.2 Da: the butyryl fragment C4H7O 71.1 Da is natural only from a natural source; the allyl alcohol fragment 57.1 Da is petrochemical in every commercial route. Routes: natural butyryl 0.55, 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

Butyric acid (fermentation or oxo synthesis) esterified with petrochemical allyl alcohol.

In plain English

A fruity-smelling ester typically made synthetically from allyl alcohol and butyric acid. Used as a fragrance ingredient in cosmetics.

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Structure

2D structure of Allyl Butyrate

prop-2-enyl butanoate

PubChem CID 16324 ↗

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. 2Allyl Butyrate. PubChem CID 16324. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ALLYL BUTYRATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ALLYL BUTYRATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ALLYL%20BUTYRATE