A colourless, oily liquid, nonanal is a component of perfumes.
2.
The most powerful semiochemical that triggers the keen sense of smell of " Culex quinquefasciatus " is nonanal.
3.
Another study failed to detect 2-nonenal at all, but found significantly increased concentrations of benzothiazole, dimethylsulphone, and nonanal on older subjects.
4.
Another significant use of 1-octene is for production of linear aldehyde via the oxo synthesis ( hydroformylation ) to give the C9 aldehyde ( nonanal ).
5.
According to a 2006 study this smell is the result of aldehydes ( for example nonanal ) and ketones ( example : 1-octen-3-one ) released from the human skin on contact with ferrous ions that are formed in the sweat-mediated corrosion of iron.
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