Database/Perfuming/Rhodinyl Propionate
Route-dependent · ISO 16128

Is Rhodinyl Propionate natural?

It depends. Rhodinol can be a natural geranium or rose fraction or synthetic citronellol; propionic acid is petrochemical. Same ruling as Rhodinyl Formate.

INCI nameRhodinyl Propionate
CAS105-89-5
FormulaC13H24O2 · 212.33 Da
FunctionPerfuming
FeedstockRhodinol esterified with propionic acid.

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 rhodinolrhodinol from geranium or rose fractions + propionic acid from petrochemical synthesis0.73Rhodinyl fragment C10H19O 155.3/212.3 = 0.73.
syntheticrhodinol from synthetic citronellol + propionic acid0.00No 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

Rhodinyl Propionate C13H24O2 212.3 Da: rhodinyl fragment 155.3 Da is natural only from geranium or rose rhodinol; the propionyl fragment 57.1 Da is petrochemical, as for Terpinyl and Isobornyl Propionate. Headline shows the natural-rhodinol 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

Rhodinol esterified with propionic acid.

In plain English

A fragrance ingredient with a rosy, fruity smell, made by combining a rose/geranium-type alcohol with propionic acid; it may come from flower oils or be made synthetically.

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Structure

2D structure of Rhodinyl Propionate

[(3S)-3,7-dimethyloct-7-enyl] propanoate

PubChem CID 25113548 ↗

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. 2Rhodinyl Propionate. PubChem CID 25113548. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3RHODINYL PROPIONATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4RHODINYL PROPIONATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=RHODINYL%20PROPIONATE