2,5-Dimethylhexane

2,5-Dimethylhexane
Names
	Preferred IUPAC name 2,5-Dimethylhexane
Identifiers
CAS Number	592-13-2 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	1696877
ChemSpider	11104 ;
ECHA InfoCard	100.008.861
EC Number	209-745-8;
PubChem CID	11592;
UNII	PCS13D63P8 ;
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 Key: UWNADWZGEHDQAB-UHFFFAOYSA-N ;
	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). verify (what is ?) 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

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

[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.

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