2,5-Dimethylhexane

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2,5-Dimethylhexane
Skeletal formula of 2,5-dimethylhexane
Ball and stick model of 2,5-dimethylhexane
Identifiers
CAS number 592-13-2 YesY
PubChem 11592
ChemSpider 11104 YesY
EC number 209-745-8
UN number 3295
Beilstein Reference 1696877
Jmol-3D images Image 1
Properties
Molecular formula C8H18
Molar mass 114.23 g mol−1
Appearance Colourless liquid
Odor Odourless
Density 694 mg mL−1
Melting point −93 to −89 °C; −136 to −128 °F; 180 to 184 K
Boiling point 108.1 to 109.9 °C; 226.5 to 229.7 °F; 381.2 to 383.0 K
Vapor pressure 7.582 kPa (at 37.7 °C)
kH 3.0 nmol Pa−1 kg−1
Refractive index (nD) 1.392
Thermochemistry
Specific
heat capacity
C
249.20 J K−1 mol−1
Std enthalpy of
formation
ΔfHo298
−262.0–−259.0 kJ mol−1
Std enthalpy of
combustion
ΔcHo298
−5.4615–−5.4587 MJ mol−1
Hazards
GHS pictograms The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The health hazard pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The environment pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word DANGER
GHS hazard statements H225, H304, H315, H336, H410
GHS precautionary statements P210, P261, P273, P301+310, P331
EU Index 601-009-00-8
EU classification Highly Flammable F Harmful Xn Dangerous for the Environment (Nature) N
R-phrases R10, R38, R65, R67, R50/53
S-phrases (S2), S16, S29, S33
Flash point 26 °C (79 °F; 299 K)
Explosive limits 0.98–?%
Related compounds
Related alkanes
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

2,5-Dimethylhexane is a branched alkane used in the aviation industry in low revolutions per minute helicopters.[citation needed] As an isomer of octane, the boiling point is very close to that of octane, but can in pure form be slightly lower. 2,5-Dimethylhexane is moderately toxic.

References[edit]

  1. ^ "2,5-DIMETHYLHEXANE - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification and Related Records. Retrieved 12 March 2012.