2-Nonenal

2-Nonenal is an unsaturated aldehyde.

The colorless liquid is an important aroma component of aged beer[2] and buckwheat, and is insoluble in water.

[3] The odor of this substance is perceived as orris, fat and cucumber.

[4] Its odor has been associated with human body odor alterations during aging.

[5]

Skeletal formula of 2-nonenal
Ball-and-stick model of the 2-nonenal molecule
NFPA 704 four-colored diamond Health 1: Exposure would cause irritation but only minor residual injury. E.g. turpentine Flammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuel Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen Special hazards (white): no code