How we scored it
2-Undecanone from thermal ketonic decarboxylation of two lauric-acid molecules, losing only CO2 and H2O (no added mass) → 1.0.
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
Industrially made by catalytic ketonisation (heat/decarboxylation) of coconut- or palm-kernel-derived lauric acid. A petrochemical synthetic route also exists and is used by some suppliers.
In plain English
A fragrance material with a fruity, rue-like odour, traditionally made by heating coconut- or palm-derived fatty acid, though it can also be produced synthetically.
CosIng definition: MNK
Structure
undecan-2-one
References
- 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.
- 2Methyl Nonyl Ketone. PubChem CID 8163. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3METHYL NONYL KETONE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4METHYL NONYL KETONE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=METHYL%20NONYL%20KETONE