2,5-Dimethylhexane

2,5-Dimethylhexane

Skeletal formula of 2,5-dimethylhexane
Ball and stick model of 2,5-dimethylhexane
Names
Preferred IUPAC name 2,5-Dimethylhexane [1]
Identifiers
CAS Number	592-13-2  Y
3D model (JSmol)	Interactive image
Beilstein Reference	1696877
ChemSpider	11104  Y
ECHA InfoCard	100.008.861
EC Number	209-745-8
PubChem CID	11592
UNII	PCS13D63P8  Y
UN number	3295
CompTox Dashboard (EPA)	DTXSID4073201
InChI InChI=1S/C8H18/c1-7(2)5-6-8(3)4/h7-8H,5-6H2,1-4H3 Y Key: UWNADWZGEHDQAB-UHFFFAOYSA-N Y
SMILES CC(C)CCC(C)C
Properties
Chemical formula	C8H18
Molar mass	114.232 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)
Henry's law constant  (kH)	3.0 nmol Pa−1 kg−1
Magnetic susceptibility (χ)	−98.15·10−6 cm3/mol
Refractive index (nD)	1.392
Thermochemistry
Heat capacity (C)	249.20 J K−1 mol−1
Std enthalpy of formation (ΔfH⦵298)	−262.0 – −259.0 kJ mol−1
Std enthalpy of combustion (ΔcH⦵298)	−5.4615 – −5.4587 MJ mol−1
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H304, H315, H336, H410
Precautionary statements	P210, P261, P273, P301+P310, P331
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
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N  verify  (what is  YN ?) Infobox references

2,5-Dimethylhexane is a branched alkane used in the aviation industry in low revolutions per minute helicopters. ^[2] 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.
2. Sarathy, S. Mani; Javed, Tamour; Karsenty, Florent; Heufer, Alexander; Wang, Weijing; Park, Sungwoo; Elwardany, Ahmed; Farooq, Aamir; Westbrook, Charles K.; Pitz, William J.; Oehlschlaeger, Matthew A.; Dayma, Guillaume; Curran, Henry J.; Dagaut, Philippe (2014-01-16). "A comprehensive combustion chemistry study of 2,5-dimethylhexane". Combustion and Flame. 161 (6): 1444–1459. Bibcode:2014CoFl..161.1444S. doi:10.1016/j.combustflame.2013.12.010. hdl: 10754/563566 . ISSN   0010-2180. OSTI   1755830. S2CID   96077924.