2,5-Dimethylhexane

2,5-Dimethylhexane

Skeletal formula of 2,5-dimethylhexane
Ball and stick model of 2,5-dimethylhexane
Names
IUPAC name 2,5-Dimethylhexane
Identifiers
CAS Number	592-13-2 N
Beilstein Reference	1696877
ChemSpider	11104 Y
EC Number	209-745-8
Jmol 3D model	Interactive image
PubChem	11592
UN number	3295
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	114.23 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)
Henry's law constant (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
Vapor pressure	{{{value}}}
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. 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.