2,3-Dimethylbutane

2,3-Dimethylbutane

Names
IUPAC name 2,3-Dimethylbutane[1]
Other names 23DMB
Identifiers
CAS Number	79-29-8
3D model (Jmol)	Interactive image
Beilstein Reference	1730737
ChemSpider	6340
ECHA InfoCard	100.001.085
EC Number	201-193-6
MeSH	2,3-dimethylbutane
PubChem	6589
RTECS number	EJ9350000
UNII	68ISQ7A432
UN number	2457
InChI InChI=1S/C6H14/c1-5(2)6(3)4/h5-6H,1-4H3 Key: ZFFMLCVRJBZUDZ-UHFFFAOYSA-N
SMILES CC(C)C(C)C
Properties
Chemical formula	C6H14
Molar mass	86.18 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
Refractive index (nD)	1.375
Thermochemistry
Specific heat capacity (C)	189.02 J K^−1 mol^−1
Std molar entropy (S^o298)	278.85 J K^−1 mol^−1
Std enthalpy of formation (ΔfH^o298)	−208.0–−206.0 kJ mol^−1
Std enthalpy of combustion (ΔcH^o298)	−4.1558–−4.1540 MJ mol^−1
Hazards
GHS pictograms
GHS signal word	DANGER
GHS hazard statements	H225, H304, H315, H336, H411
GHS precautionary statements	P210, P261, P273, P301+310, P331
EU classification (DSD)	F Xn N
R-phrases	R11, R38, R65, R67, R51/53
S-phrases	(S2), S16, S29, S33
Flash point	−29 °C (−20 °F; 244 K)
Autoignition temperature	420 °C (788 °F; 693 K)
Explosive limits	1.2–7.7%
US health exposure limits (NIOSH):
PEL (Permissible)	none[2]
Related compounds
Related alkanes	Neopentane 2,2-Dimethylbutane Triptane Tetramethylbutane Tetraethylmethane 2,2,4-Trimethylpentane 2,3,3-Trimethylpentane 2,3,4-Trimethylpentane Tetra-tert-butylmethane
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

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.

References

1. "2,3-dimethylbutane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification and Related Records. Retrieved 10 March 2012.
2. "NIOSH Pocket Guide to Chemical Hazards #0323". National Institute for Occupational Safety and Health (NIOSH).