2-Nonenal

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2-Nonenal
Nonenal.png
Identifiers
CAS number 18829-56-6 (trans) YesY, 60784-31-8 (cis), 2463-53-8 (cis/trans mixture)
PubChem 5283335
ChemSpider 4446456 YesY
ChEMBL CHEMBL450072 YesY
Jmol-3D images Image 1
Properties
Molecular formula C9H16O
Molar mass 140.22 g mol−1
Appearance Colorless liquid
Boiling point 55 to 60 °C (131 to 140 °F; 328 to 333 K) at 0.30 mmHg
Hazards
MSDS External MSDS
EU classification Irritant (XI)
R-phrases R38
S-phrases S24/25 S37 S45 S28
NFPA 704
Flammability code 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 Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 79 °C (174 °F; 352 K)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

2-Nonenal (sometimes misspelled as noneal) is an unsaturated aldehyde. The colorless liquid is an important aroma component of aged beer[1] and buckwheat.[2]

Odor characteristics[edit]

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 (aka. Old People Smell).[4]

References[edit]

  1. ^ 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. 
  2. ^ 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. 
  3. ^ "2-nonenal CAS 60784-31-8". Flavornet. 
  4. ^ 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. 

Further reading[edit]