2,3-Dimethylbutane
2,3-Dimethylbutane is an isomer of hexane. It has the chemical formula (CH3)2CHCH(CH3)2. It is a colorless liquid which boils at 57.9 °C.
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| Names | |
|---|---|
| IUPAC name
2,3-Dimethylbutane[1] | |
| Other names
23DMB | |
| Identifiers | |
3D model (JSmol) |
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| 1730737 | |
| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.001.085 |
| EC Number |
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| MeSH | 2,3-dimethylbutane |
PubChem CID |
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| RTECS number |
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| UNII | |
| UN number | 2457 |
CompTox Dashboard (EPA) |
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| Properties | |
| C6H14 | |
| Molar mass | 86.178 g·mol−1 |
| Appearance | Colorless liquid |
| Odor | Odorless |
| Density | 662 mg mL−1 |
| Melting point | −136 to −124 °C; −213 to −191 °F; 137 to 149 K |
| Boiling point | 57.9 to 58.3 °C; 136.1 to 136.8 °F; 331.0 to 331.4 K |
| Vapor pressure | 26.1 kPa (at 21.1 °C) |
Henry's law constant (kH) |
7.6 nmol Pa−1 kg−1 |
| -76.22·10−6 cm3/mol | |
Refractive index (nD) |
1.375 |
| Thermochemistry | |
Heat capacity (C) |
189.02 J K−1 mol−1 |
Std molar entropy (S |
278.85 J K−1 mol−1 |
Std enthalpy of formation (ΔfH⦵298) |
−208.0–−206.0 kJ mol−1 |
Std enthalpy of combustion (ΔcH⦵298) |
−4.1558–−4.1540 MJ mol−1 |
| Hazards | |
| GHS pictograms |     |
| GHS Signal word | Danger |
GHS hazard statements |
H225, H304, H315, H336, H411 |
| P210, P261, P273, P301+310, P331 | |
| Flash point | −29 °C (−20 °F; 244 K) |
| 420 °C (788 °F; 693 K) | |
| Explosive limits | 1.2–7.7% |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
none[2] |
| Related compounds | |
Related alkanes |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
References
- "2,3-dimethylbutane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification and Related Records. Retrieved 10 March 2012.
- NIOSH Pocket Guide to Chemical Hazards. "#0323". National Institute for Occupational Safety and Health (NIOSH).
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