Octadecane

Octadecane

Names
Preferred IUPAC name Octadecane
Identifiers
CAS Number	593-45-3  Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:CHEBI:32926
ChemSpider	11145
ECHA InfoCard	100.008.902
EC Number	209-790-3
MeSH	C022883
PubChem CID	11635
UNII	N102P6HAIU  Y
CompTox Dashboard (EPA)	DTXSID9047172
InChI InChI=1S/C18H38/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3-18H2,1-2H3 Key: RZJRJXONCZWCBN-UHFFFAOYSA-N InChI=1/C18H38/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3-18H2,1-2H3 Key: RZJRJXONCZWCBN-UHFFFAOYAL
SMILES C(CCCCCCCCCCCCCCCC)C
Properties
Chemical formula	C18H38
Molar mass	254.502 g·mol−1
Appearance	White crystals or powder
Odor	Odorless
Density	0.777 g·mL−1
Melting point	28 to 30 °C (82 to 86 °F; 301 to 303 K)
Boiling point	317 °C (603 °F; 590 K)
Vapor pressure	1 mm Hg at 119 °C
Henry's law constant  (kH)	1.9·10−2 atm m3 mol−1 (est) [1]
Refractive index (nD)	1.4390 at 20 °C [2]
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H304
Precautionary statements	P301+P316, P331, P405, P501
Flash point	165 °C (329 °F; 438 K)
Autoignition temperature	235 °C (455 °F; 508 K)
Related compounds
Related alkanes	Heptadecane Nonadecane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Octadecane is an alkane hydrocarbon with the chemical formula C ₁₈ H ₃₈ or CH₃(CH₂)₁₆CH₃.

Properties

Octadecane is distinguished by being the alkane with the lowest carbon number that is unambiguously solid at room temperature and pressure.

References

1. US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.1. Nov, 2012. Available from, as of Nov 11, 2016: https://www.epa.gov/tsca-screening-tools
2. "Octadecane | 593-45-3".

External links

• Phytochemical and Ethnobotanical Databases