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Undecane

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Revision as of 03:21, 5 January 2012 by CheMoBot (talk | contribs) (Updating {{chembox}} (changes to verified and watched fields - updated 'DrugBank_Ref', 'KEGG_Ref') per Chem/Drugbox validation (report errors or bugs))(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)
Undecane
Skeletal formula of undecane
Ball and stick model of undecane
Names
IUPAC name Undecane
Identifiers
CAS Number
3D model (JSmol)
Beilstein Reference 1697099
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.013.001 Edit this at Wikidata
EC Number
  • 214-300-6
MeSH undecane
PubChem CID
RTECS number
  • YQ1525000
UNII
UN number 2330
CompTox Dashboard (EPA)
InChI
  • InChI=1S/C11H24/c1-3-5-7-9-11-10-8-6-4-2/h3-11H2,1-2H3Key: RSJKGSCJYJTIGS-UHFFFAOYSA-N
SMILES
  • CCCCCCCCCCC
Properties
Chemical formula C11H24
Molar mass 156.313 g·mol
Appearance Colorless, transparent liquid
Odor Petrolic
Density 740 mg mL
log P 6.312
Vapor pressure <50 Pa (at 20 °C)
Refractive index (nD) 1.417
Thermochemistry
Heat capacity (C) 345.05 J K mol
Std molar
entropy (S298) 		458.15 J K mol
Std enthalpy of
formation (ΔfH298) 		−329.8–−324.6 kJ mol
Std enthalpy of
combustion (ΔcH298) 		−7.4339–−7.4287 MJ mol
Hazards
GHS labelling:
Pictograms GHS06: ToxicGHS08: Health hazard
Signal word Danger
Hazard statements H304, H315, H319, H331, H335
Precautionary statements P261, P301+P310, P305+P351+P338, P311, P331
Flash point 62 °C
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). ☒N verify (what is  ?) Infobox references
Chemical compound

Undecane (also known as hendecane) is a liquid alkane hydrocarbon with the chemical formula CH3(CH2)9CH3. It is used as a mild sex attractant for various types of moths and cockroaches, and an alert signal for a variety of ants. It has 159 isomers.

Undecane may also be used as an internal standard in gas chromatography when working with other hydrocarbons. Since the boiling point of undecane (196°C) is well known, it may be used as a comparison for retention times in a gas chromatograph for molecules whose structure has been freshly elucidated. For example, if one is working with a 50 m crosslinked methyl silicone capillary column with an oven temperature increasing slowly, beginning around 60°C, an 11-carbon molecule like undecane may be used as an internal standard to be compared with the retention times of other 10-, 11-, or 12- carbon molecules, depending on their structures.

See also

References

  1. "undecane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. Retrieved 5 January 2012.
  2. Hölldobler B, Wilson EO (1990). The Ants. Harvard University Press. ISBN 0-674-04075-9, p. 287

External links

  • Undecane at Dr. Duke's Phytochemical and Ethnobotanical Databases
Alkanes
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