Octane

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Octane
Skeletal formula o octane
Skeletal formula o octane wi aw implicit carbons shawn, an aw explicit hydrogens addit
Ball an stick model o octane
Spacefill model o octane
Names
IUPAC name
Octane[1]
Identifiers
111-65-9 YesY
3DMet B00281
Beilstein Reference 1696875
ChEBI CHEBI:17590 N
ChEMBL ChEMBL134886 YesY
ChemSpider 349 YesY
DrugBank DB02440 N
EC-nummer [1]
Gmelin Reference 82412
Jmol-3D images Image
KEGG C01387 YesY
MeSH octane
PubChem
RTECS nummer RG8400000
UN nummer 1262
Properties
C8H18
Molar mass 114.23 g·mol−1
Appearance Colourless liquid
Odor Gasoline-like
Density 0.703 g cm−3
0.007 mg dm−3 (at 20°C)
log P 4.783
Vapor pressure 1.47 kPa (at 20.0 °C)
kH 29 nmol Pa−1 kg−1
Refractive index (nD) 1.398
Viscosity 542 μPa s (at 20 °C)
Thermochemistry
Std enthalpy o
formation
ΔfHo298
−252.1–−248.5 kJ mol−1
Std enthalpy o
combustion
ΔcHo298
−5.53–−5.33 MJ mol−1
Staundart molar
entropy
So298
361.20 J K−1 mol−1
Speceefic heat capacity, C 255.68 J K−1 mol−1
Hazards
GHS pictograms The flame pictogram in the Globally Harmonized Seestem o Classification an Labelling o Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized Seestem o Classification an Labellin of Chemicals (GHS) The health hazard pictogram in the Globally Harmonized Seestem o Classification an Labellin of Chemicals (GHS) The environment pictogram in the Globally Harmonized Seestem o Classification an Labellin o Chemicals (GHS)
GHS signal wird DANGER
GHS hazard statements H225, H304, H315, H336, H410
GHS precautionary statements P210, P261, P273, P301+310, P331
EU classification {{{value}}}
R-phrases R11, R38, R50/53, R65, R67
S-phrases (S2), S16, S29, S33
Flash pynt {{{value}}}
Explosive leemits 0.96–6.5%
Related compounds
Relatit alkanes
Except whaur otherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
 N verify (whit isYesY/N?)
Infobox references

Octane is a hydrocarbon an an alkane wi the chemical formula C8H18, an the condensed structural formula CH3(CH2)6CH3. Octane haes mony structural isomers that differ bi the amoont an location o branchin in the carbon chain. Ane o these isomers, 2,2,4-trimethylpentane (isooctane) is uised as ane o the staundart values in the octane ratin scale.

As wi aw law-molecular wicht hydrocarbons, octane an its isomers are very flammable an are components o gasoline (petrol).

References[eedit | eedit soorce]

  1. "octane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. Retrieved 6 January 2012. 

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