2,2-Dimethylbutane

{{#if:OdorlessOdorlessColorless liquid649 mg mL⁻¹3.5136.88 kPa (at 20 °C)6.5 nmol Pa⁻¹ kg⁻¹1.369171175146|! style="background: #F8EABA; text-align: center;" colspan="2" | Properties

2,2-Dimethylbutane
Stereo, skeletal formula of 2,2-dimethylbutane with some implicit hydrogens shown
Ball stick model of 2,2-dimethylbutane	Spacefill model of 2,2-dimethylbutane
IUPAC name 2,2-Dimethylbutane
Other names Neohexane
Identifiers
CAS number	75-83-2 7pxY
PubChem	6403
ChemSpider	6163 7pxY
EC number	1730736
UN number	1208
ChEMBL	CHEMBL142735 7pxY
Beilstein Reference	1730736
Jmol-3D images	Image 1
SMILES CCC(C)(C)C <p><p style="word-wrap: break-word;">
InChI InChI=1S/C6H14/c1-5-6(2,3)4/h5H2,1-4H3 7pxY Key: HNRMPXKDFBEGFZ-UHFFFAOYSA-N 7pxY
Molecular formula	C6H14
Molar mass	86.18 g mol−1
Thermochemistry
Std enthalpy of formation ΔfHo298	−214.4–−212.4 kJ mol−1
Std enthalpy of combustion ΔcHo298	−4.1494–−4.1476 MJ mol−1
Standard molar entropy So298	272.00 J K−1 mol−1
Specific heat capacity, C	189.67 J K−1 mol−1
Hazards
GHS pictograms	The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The health hazard pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The environment pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word	DANGER
GHS hazard statements	H225, H304, H315, H336, H411
GHS precautionary statements	P210, P261, P273, P301+310, P331
EU Index	601-007-00-7
EU classification	Flammable F Harmful Xn Dangerous for the Environment (Nature) N
R-phrases	R11, R38, R51/53, R65, R67
S-phrases	(S2), S16, S29, S33
NFPA 704	75px 3 1 0
Flash point	−29 °C
Autoignition temperature	425 °C
Explosive limits	1.2–7.7%
Related compounds
Related alkanes	Neopentane 2,3-Dimethylbutane Triptane Tetramethylbutane Tetraethylmethane 2,2,4-Trimethylpentane 2,3,3-Trimethylpentane 2,3,4-Trimethylpentane Tetra-tert-butylmethane
14pxY (verify) (what is: 10pxY/10pxN?) 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-methylpentane (isohexane)

References

de:2,2-Dimethylbutan