I think I can understand the "fatty soap" reference. There are some perfumes that smell like a traditional soap we have here, "yellow soap". which is probably some kind of local version of Castille soap (the brands that make it all belong to vegetable oil or olive oil companies), and I do like them.
I am still confused on the "metallic and fizzy" part. Do you mean like bubbly white wine, that tickles in the nose?
Sorry, English is not my first language.
Aldehydes are a class of carbon based chemicals which all share a common functional group ( a bit of the molecule's structure is the same in all Aldehydes). Many Aldehydes are used in Perfumery; Vanillin (main chemical in Vanilla), Cinnamic Aldehyde (Cinnamon and Cassia), Cumin Aldehyde (Cumin) and Citral (Lemongrass oil and Lemon oils) are all Aldehydes, and all smell very different. When we refer to an "Aldehydic fragrance" we are usually talking about a sub-set of Aldehydes called "Straight Chain Aldehydes". Those most common found in Perfumery are Aldehyde C8 (8 carbon atoms in a row), Aldehyde C9, C10, two sorts of C11 and two sorts of C12. As the chain lengthens so the smell changes. Aldehyde C8 smells fatty, and reminiscent of Mandarin, C10 smells more sour and reminiscent of Lemon, the longer chained Aldehydes smell more floral. They all have a fatty quality, the longer the chain the more metallic and "fizzy' they become.
I know this on an older thread, but David can you explain a little how these aldehydes were created? My understanding is that they are not necessarily naturally derived. I'm totally ignorant in this area... Do you literally take a natural occurring molecule and put it through a chemical reaction to change the structure? If so, how do you isolate them?
Forgive my ignorance, I work in finance haha
Well of course it depends what aldehyde exactly. Aldehydes often smell good, kind of sweet and pleasant, yet maybe a tad bit harsh at the same time.
Think of the smell of artificial cherry, or artificial green apple, or cucumber fragrance.
They're all kind of pungently sweet and sharp.
However, normally when referring to aldehydes in fragrances there are more specific aldehydes being referred to that give a sparkling effect, perking up a natural perfume to make it feel more like something in a department store. Kind of adds a bright sharpness on the surface.
Came in to post Chanel 5, as that it what I think of when I think aldehydes. Having said that, I was not aware that there were so many different aldehyde smells. I will have to keep my nose out for more andehyde smelling fragrances. I quite like the smell personally. My GF...not so much...LOL!The easiest way to check the stereotypical aldehyde is to smell the first 10 seconds of Chanel No 5. Most of what one gets is aldehydes. But as david was saying there are several aldehydes and they all have slightly different odor profiles.