| Solubility = insoluble in water<ref name=NIOSH>{{PGCH|0418}}</ref>
| VaporPressure = 2 mmHg (20°C)<ref name=NIOSH/>
}}
| Section3 = {{Chembox Hazards
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'''3-Octanone''' is an [[organic compound]] with the formula {{chem2|C5H11C(O)C2H5}}. A colorless, fragrant liquid, it is classified as a [[ketone]]. It is one of three octanones, the others being [[2-Octanone|2-octanone]] and 4-octanone.
==Occurrence==
3-Octanone is found in a variety of sources such as plants (such as [[lavender]]),<ref>{{cite book | editor = Opdyke, D.L.J. | title = Monographs on Fragrance Raw Materials | location = New York | publisher = Pergamon Press | date = 1979 | page = 346}}</ref> herbs (such as [[rosemary]]),<ref>{{cite journal | title = Freshly Distilled Oil of the Leaves of Rasmarinus Officianalis L Contained 3-Octanone | author = Koedam, A. | journal = Z. Naturforsch. C | volume =33C | issue = 1–2 | pages = 144 | date = 1978| doi = 10.1515/znc-1978-1-226 | s2cid = 87276514 |display-authors=etal| doi-access = free }}</ref> basil, and thyme,<ref>{{cite journal |doi=10.1016/j.foodchem.2004.05.056|title=Identification of volatile components in basil (Ocimum basilicum L.) and thyme leaves (Thymus vulgaris L.) and their antioxidant properties |year=2005 |last1=Lee |first1=Seung-Joo |last2=Umano |first2=Katumi |last3=Shibamoto |first3=Takayuki |last4=Lee |first4=Kwang-Geun |journal=Food Chemistry |volume=91 |pages=131–137 }}</ref>), and nectarines.<ref>{{cite journal |title=Nectarine volatiles: vacuum steam distillation versus headspace sampling| author = Takeoka GR | journal = J Agric Food Chem | volume = 36 |issue=3| pages = 553–560 | date = 1988|doi=10.1021/jf00081a037 |display-authors=etal}}</ref> It was also found to be present in [[Schizonepeta|Japanese catnip]] (''Schizonepeta tenuifolia'')<ref>{{Cite journal
It is used as a flavor and fragrance ingredient.<ref>{{cite web | url = http://www.thegoodscentscompany.com/data/rw1004231.html | title = 3-octanone | publisher = thegoodscentscompany.com}}</ref><ref>{{cite book | author = Ashford RD | title = Ashford's Dictionary of Industrial Chemicals | publisher = Wavelength Publications Ltd | location = London, England | page = 389 | date = 1994}}</ref><ref>[http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?FR=172.515 Code of Federal Regulations Title 21]</ref>▼
It was also found to be present in Japanese catnip (''[[schizonepeta|schizonepeta tenuifolia]]''),<ref>{{Cite journal
| pmid = 22072908
| year = 2011
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| pmc = 3210999
| doi-access = free
}}</ref> and the [[Boletus pinophilus|pine king bolete]] (''[[Boletus pinophilus]]'').<ref name=bozok>{{cite journal |doi=10.15835/nbha4319731|title=Comparison of Volatile Compounds of Fresh ''Boletus edulis'' and ''B. Pinophilus'' in Marmara Region of Turkey|year=2015|last1=Bozok|first1=Fuat|last2=Zarifikhosroshahi|first2=Mozhgan|last3=Kafkas|first3=Ebru|last4=Taşkin|first4=Hatira|last5=Buyukalaca|first5=Saadet|journal=Notulae Botanicae Horti Agrobotanici Cluj-Napoca|volume=43|pages=192–195|doi-access=free}}</ref> It is produced by [[Pleurotus|oyster mushrooms]] as an insecticide to kill [[roundworms]].<ref>{{cite journal |doi=10.1016/j.foodres.2022.111708|title=Activation of mycelial defense mechanisms in the oyster mushroom Pleurotus ostreatus induced by Tyrophagus putrescentiae |year=2022 |last1=Li |first1=Huiping |last2=Liu |first2=Junjie |last3=Hou |first3=Ziqiang |last4=Luo |first4=Xin |last5=Lin |first5=Jinsheng |last6=Jiang |first6=Ning |last7=Hou |first7=Lijuan |last8=Ma |first8=Lin |last9=Li |first9=Cuixin |last10=Qu |first10=Shaoxuan |journal=Food Research International |volume=160 |page=111708 |pmid=36076457 |s2cid=250931270 }}</ref><ref name = "Shrooms">{{cite journal |doi=10.1016/j.foodres.2022.111708|title=Activation of mycelial defense mechanisms in the oyster mushroom Pleurotus ostreatus induced by Tyrophagus putrescentiae |year=2022 |last1=Li |first1=Huiping |last2=Liu |first2=Junjie |last3=Hou |first3=Ziqiang |last4=Luo |first4=Xin |last5=Lin |first5=Jinsheng |last6=Jiang |first6=Ning |last7=Hou |first7=Lijuan |last8=Ma |first8=Lin |last9=Li |first9=Cuixin |last10=Qu |first10=Shaoxuan |journal=Food Research International |volume=160 |page=111708 |pmid=36076457 |s2cid=250931270 }}</ref><ref>{{cite web |last1=Ouellette |first1=Jennifer |title=Carnivorous oyster mushrooms can kill roundworms with "nerve gas in a lollipop" |url=https://arstechnica.com/science/2023/01/carnivorous-oyster-mushrooms-can-kill-roundworms-with-nerve-gas-in-a-lollipop/?comments=1&comments-page=1 |website=Ars Technica |access-date=26 January 2023 |language=en-us |date=18 January 2023}}</ref>
==Uses==
It is produced by the oyster mushroom as an insecticide.<ref>{{cite journal |doi=10.1016/j.foodres.2022.111708|title=Activation of mycelial defense mechanisms in the oyster mushroom Pleurotus ostreatus induced by Tyrophagus putrescentiae |year=2022 |last1=Li |first1=Huiping |last2=Liu |first2=Junjie |last3=Hou |first3=Ziqiang |last4=Luo |first4=Xin |last5=Lin |first5=Jinsheng |last6=Jiang |first6=Ning |last7=Hou |first7=Lijuan |last8=Ma |first8=Lin |last9=Li |first9=Cuixin |last10=Qu |first10=Shaoxuan |journal=Food Research International |volume=160 |page=111708 |pmid=36076457 |s2cid=250931270 }}</ref>
▲It3-Octanone is used as a flavor and fragrance ingredient.<ref>{{cite web | url = http://www.thegoodscentscompany.com/data/rw1004231.html | title = 3-octanone | publisher = thegoodscentscompany.com}}</ref><ref>{{cite book | author = Ashford RD | title = Ashford's Dictionary of Industrial Chemicals | publisher = Wavelength Publications Ltd | location = London, England | page = 389 | date = 1994}}</ref><ref>[http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?FR=172.515 Code of Federal Regulations Title 21]</ref>
