2,2-Dimethylbutane

2,2-Dimethylbutane
IUPAC name 2,2-Dimethylbutane
Other names Neohexane
Identifiers
CAS number	75-83-2 Y
ChemSpider	6163 Y
ChEMBL	CHEMBL142735 Y
Jmol-3D images	Image 1
SMILES CC(C)(C)CC
InChI InChI=1S/C6H14/c1-5-6(2,3)4/h5H2,1-4H3 Y Key: HNRMPXKDFBEGFZ-UHFFFAOYSA-N Y InChI=1/C6H14/c1-5-6(2,3)4/h5H2,1-4H3 Key: HNRMPXKDFBEGFZ-UHFFFAOYAJ
Properties
Molecular formula	(CH3)3CCH2CH3
Molar mass	86.17 g/mol
Appearance	colorless liquid
Density	0.649 g cm-3, liquid
Melting point	-98.8 °C, 174 K, -146 °F
Boiling point	49.73 °C, 323 K, 122 °F
Solubility in water	Insoluble
Thermochemistry
Std enthalpy of formation ΔfHo298	−44.5 kJ/mol
Hazards
EU classification	Highly flammable (F+) Harmful (Xn) Dangerous for the environment (N)
R-phrases	R11 R20 R48 R51/53 R62 R65 R67
S-phrases	S9 S16 S29 S33 S36 S37 S61 S62
NFPA 704	3 1 0
Flash point	−29 °C (closed cup)
Related compounds
Related alkanes	Butane Hexane
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

2,2-Dimethylbutane, trivially known as neohexane, is an organic compound with formula C₆H₁₄ or (H₃C-)₃-C-CH₂-CH₃. It is therefore an alkane, indeed the most compact and branched of the hexane isomers — the only one with a quaternary carbon and a butane (C₄) backbone.

See also

• methylbutane (isopentane)
• 2,3-dimethylbutane
• 2,2,3-trimethylbutane (triptane)
• 2,2,3,3-tetramethylbutane
• 2-methylpentane (isohexane)
• 2,2-dimethylpentane (neoheptane)