2,5-Dimethylhexane

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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
Std enthalpy of
formation
ΔfHo298
−262.0–−259.0 kJ mol−1
Std enthalpy of
combustion
ΔcHo298
−5.4615–−5.4587 MJ mol−1
Specific heat capacity, C 249.20 J K−1 mol−1
Hazards
GHS pictograms
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 F Xn 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
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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

  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. 
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