Citronellal
Citronellal or rhodinal (C10H18O) is a monoterpenoid aldehyde, the main component in the mixture of terpenoid chemical compounds that give citronella oil its distinctive lemon scent.
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![]() (+)-Citronellal | |
![]() (-)-Citronellal | |
Names | |
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IUPAC name
3,7-dimethyloct-6-enal | |
Identifiers | |
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ChEBI | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.003.070 |
EC Number |
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KEGG | |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C10H18O | |
Molar mass | 154.25 g/mol |
Density | 0.855 g/cm3 |
Boiling point | 201 to 207 °C (394 to 405 °F; 474 to 480 K) |
Hazards | |
GHS pictograms | ![]() ![]() |
GHS Signal word | Warning |
GHS hazard statements |
H315, H317, H411[2] |
P262, P273, P280, P302+352[2] | |
Related compounds | |
Related alkenals |
Citral |
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 | |
Citronellal is a major isolate in distilled oils from the plants Cymbopogon,[3] lemon-scented gum, and lemon-scented teatree. The (S)-(−)-enantiomer of citronellal makes up to 80% of the oil from kaffir lime leaves and is the compound responsible for its characteristic aroma.
Citronellal has insect repellent properties, and research shows high repellent effectiveness against mosquitoes.[4] Another research shows that citronellal has strong antifungal qualities.[5]
Compendial status
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See also
- Citral
- Citronellol
- Citronella oil
- Hydroxycitronellal
- Perfume allergy
References
- Citronellal, The Merck Index, 12th Edition
- Record of Citronellal in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 13 March 2020.
- Mahalwal, Vijender S.; Ali, Mohd. (2003). "Volatile constituents of Cymbopogon nardus (Linn.) Rendle". Flavour and Fragrance Journal. 18: 73. doi:10.1002/ffj.1144.
- Jeong-Kyu KIM; Chang-Soo KANG; Jong-Kwon LEE; Young-Ran KIM; Hye-Yun HAN; Hwa Kyung YUN (2005). "Evaluation of Repellency Effect of Two Natural Aroma Mosquito Repellent Compounds, Citronella and Citronellal". Entomological Research. 35 (2): 117–120. doi:10.1111/j.1748-5967.2005.tb00146.x.
- Kazuhiko NAKAHARA, Najeeb S. ALZOREKY1, Tadashi YOSHIHASHI, Huong T. T. NGUYEN and Gassinee TRAKOONTIVAKORN (2003). "Chemical Composition and Antifungal Activity of Essential Oil from Cymbopogon nardus (Citronella Grass)". JARQ. 37 (4).CS1 maint: multiple names: authors list (link)
- The British Pharmacopoeia Secretariat (2009). "Index, BP 2009" (PDF). Archived from the original (PDF) on 11 April 2009. Retrieved 31 March 2010.
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