2,5-Dimethylhexane

2,5-Dimethylhexane
IUPAC name 2,5-Dimethylhexane[1]
Identifiers
CAS number	592-13-2 Y
PubChem	11592
ChemSpider	11104 Y
EC number	209-745-8
UN number	3295
Beilstein Reference	1696877
Jmol-3D images	Image 1
SMILES CC(C)CCC(C)C
InChI InChI=1S/C8H18/c1-7(2)5-6-8(3)4/h7-8H,5-6H2,1-4H3 Y Key: UWNADWZGEHDQAB-UHFFFAOYSA-N Y
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	Tetraethylmethane 2,2,4-Trimethylpentane 2,3,3-Trimethylpentane 2,3,4-Trimethylpentane Tetra-tert-butylmethane 2,3-Dimethylhexane Isocetane
Y (verify) (what is: Y/N?) 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