1-Octadecene

1-Octadecene is a long-chain hydrocarbon and an alkene with the molecular formula CH₂=CH(CH₂)₁₅CH₃. It is one of many isomers of octadecene. Classified as an alpha-olefin, 1-octadecene is the longest alkene that is liquid at room temperature.^[3][2]

1-Octadecene

Names
Preferred IUPAC name Octadec-1-ene
Other names alpha-Octadecene; Octadecylene; alpha-Olefin C18; n-1-Octadecene
Identifiers
CAS Number	112-88-9 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:30824 Y
ChemSpider	7925 Y
ECHA InfoCard	100.003.648
PubChem CID	8217
UNII	H5ZUQ6V4AK Y
CompTox Dashboard (EPA)	DTXSID3026932
InChI InChI=1S/C18H36/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3H,1,4-18H2,2H3 Y Key: CCCMONHAUSKTEQ-UHFFFAOYSA-N Y InChI=1S/C18H36/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3H,1,4-18H2,2H3 Key: CCCMONHAUSKTEQ-UHFFFAOYSA-N
SMILES C=C\CCCCCCCCCCCCCCCC
Properties
Chemical formula	C18H36
Molar mass	252.486 g·mol−1
Appearance	colorless liquid
Density	0.789 g/mL[1]
Melting point	14 to 16 °C (57 to 61 °F; 287 to 289 K)[1] 17 to 18 °C[2]
Boiling point	315 °C (599 °F; 588 K)[2]
Solubility in water	Insoluble[2]
Hazards
NFPA 704 (fire diamond)	1 1 0
Flash point	155 °C (311 °F; 428 K)[2]
Autoignition temperature	250 °C (482 °F; 523 K)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Hydrosilation

Treatment of 1-octadecene with trichlorosilane in the presence of platinum catalysts gives octadecyltrichlorosilane. Octadecene adds to hydrogen-terminated bulk silicon.^[4]

See also

• C₁₈H₃₆