| 2,2-Dimethylbutane | |
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2,2-Dimethylbutane |
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Other names
Neohexane |
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| Identifiers | |
| CAS number | 75-83-2 |
| ChemSpider | 6163 |
| ChEMBL | CHEMBL142735 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | (CH3)3CCH2CH3 |
| Molar mass | 86.17 g/mol |
| Appearance | colorless liquid |
| Density | 0.649 g/l, 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 ΔfH |
−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
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| Flash point | −29 °C (closed cup) |
| Related compounds | |
| Related alkanes | Butane Hexane |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| 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.