Description and usage notes:
Note that this material is even more powerful and diffusive than the similar cis-6-Nonenol. At 0.1% this material develops a very smooth, beautiful, natural and edible melon note that is greener than the alcohol but still very fresh and summery; at 1% as offered here, there’s still a distinctly vegetable, green quality. Widely used in melon, watermelon, strawberry and especially apple flavours it can equally be used to contribute to those notes in fragrance. Undiluted this material tends to oxidise quickly and requires refrigeration and completely full containers, or storage under nitrogen. Fortunately dilution in an alcohol makes it much more stable.
In fragrances it is also useful to add lift and diffusion (in a similar way to that provided by trans-2-cis-6-nonadienal and the equivalent alcohols). In this context very tiny traces are used, while up to 0.1% might be included in a fragrance with a dominant melon note.
Writing in 1985 Arcadi Boix Camps says of “cis-6-nonenal … of such extraordinary strength that in a solution of 1ppm [it has] a smooth, melon odour. Used in traces, in solutions of 1%, [it yields] surprising effects that have already been applied in high-class perfumery.” He also includes this material in a group he calls ‘melon fuitals’: “… which includes products as extraordinary as … cis-6-nonenol, Melonal, Floralozone, Helional and the extraordinary Calone” .
He says that: “The capacity of these materials to modify is infinite, and they combine with almost all the notes, vivifying both the floral blends and the more fundamental animal notes. Thier effects on other unsaturated aldehydes with a citric note are surprising.”
This material is both extremely powerful and quite expensive and as such is presented for sale at 1% in DPG: should you need it for an application in which DPG isn’t appropriate, please contact us, we may be able to help.