2-Nonenal

2-Nonenal
Names
	Preferred IUPAC name Non-2-enal
Identifiers
CAS Number	18829-56-6 (trans) ; 60784-31-8 (cis) ; 2463-53-8 (cis/trans mixture) ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL450072 ;
ChemSpider	4446456 ;
ECHA InfoCard	100.038.720
PubChem CID	5283335;
UNII	8VEO649985 (trans) ; ARM1W3309Z (cis) ; 93C6BZW2TV (cis/trans mixture) ;
CompTox Dashboard (EPA)	DTXSID0047086 ;
	InChI InChI=1S/C9H16O/c1-2-3-4-5-6-7-8-9-10/h7-9H,2-6H2,1H3/b8-7+ Key: BSAIUMLZVGUGKX-BQYQJAHWSA-N ; InChI=1/C9H16O/c1-2-3-4-5-6-7-8-9-10/h7-9H,2-6H2,1H3/b8-7+ Key: BSAIUMLZVGUGKX-BQYQJAHWBS;
	SMILES O=C/C=C/CCCCCC;
Properties
Chemical formula	C9H16O
Molar mass	140.226 g·mol−1
Appearance	Colorless liquid
Boiling point	188.00 to 190.00 °C (370.40 to 374.00 °F; 461.15 to 463.15 K) at 760.00 mmHg
Hazards
Safety data sheet	External MSDS
EU classification (DSD) (outdated)	Irritant (XI)
R-phrases (outdated)	R38
S-phrases (outdated)	S24/25 S37 S45 S28
NFPA 704 (fire diamond)	2 1 0
Flash point	79 °C (174 °F; 352 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

2-Nonenal is an unsaturated aldehyde. The colorless liquid is an important aroma component of aged beer[1] and buckwheat.[2]

Odor characteristics

The odor of this substance is perceived as orris, fat and cucumber.[3] Its odor has been associated with human body odor alterations during aging.[4]

Santos, J. R.; Carneiro, J. R.; Guido, L. F.; Almeida, P. J.; Rodrigues, J. A.; Barros, A. A. (2008). "Determination of E-2-nonenal by high-performance liquid chromatography with UV detection - Assay for the evaluation of beer ageing". Journal of Chromatography A. 985 (1–2): 395–402. doi:10.1016/S0021-9673(02)01396-1.
Janeš, D.; Kantar, D.; Kreft, S.; Prosen, H. (2008). "Identification of buckwheat (Fagopyrum esculentum Moench) aroma compounds with GC-MS". Food Chemistry. 112 (1): 120–4. doi:10.1016/j.foodchem.2008.05.048.
"2-nonenal CAS 60784-31-8". Flavornet.
Haze, S.; Gozu, Y.; Nakamura, S.; Kohno, Y.; Sawano, K.; Ohta, H.; Yamazaki, K. (2001). "2-Nonenal Newly Found in Human Body Odor Tends to Increase with Aging". Journal of Investigative Dermatology. 116 (4): 520–4. doi:10.1046/j.0022-202x.2001.01287.x. PMID 11286617.