Database/Perfuming/A-Terpinyl Acetate
Mostly natural · ISO 16128

Is A-Terpinyl Acetate natural?

Mostly. Alpha-terpineol is made by hydrating pine-turpentine pinene (a b natural feedstock), but the acetyl group comes from petrochemical acetic anhydride, as in isobornyl acetate.

INCI nameA-Terpinyl Acetate
CAS80-26-2
FormulaC12H20O2 · 196.29 Da
FunctionPerfuming
FeedstockDominant route: acid-catalysed hydration of pinene from pine…

How we scored it

Terpinyl-O C10H17O 153.2 natural (pine pinene via terpineol, b); acetyl C2H3O 43.0 petrochemical cap; total C12H20O2 196.3; 153.2/196.3 = 0.78.
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

Dominant route: acid-catalysed hydration of pinene from pine turpentine to alpha-terpineol, then acetylation with acetic anhydride. Alternative: isolation from essential oils such as cardamom is minor.

In plain English

A fragrance ingredient with a sweet, herbal, lavender-like scent. It is the acetate ester of alpha-terpineol, which is made from pine turpentine, joined to a petrochemical acetyl group.

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Structure

2D structure of A-Terpinyl Acetate

2-(4-methylcyclohex-3-en-1-yl)propan-2-yl acetate

PubChem CID 111037 ↗

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. 2A-Terpinyl Acetate. PubChem CID 111037. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3A-TERPINYL ACETATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4A-TERPINYL ACETATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=A-TERPINYL%20ACETATE