3-Methylhexane

3-Methylhexane is a branched hydrocarbon with two enantiomers.^[2] It is one of the isomers of heptane.

3-Methylhexane

Skeletal formula of 3-methylhexane
Ball-and-Stick model of 3-methylhexane
Names
Preferred IUPAC name 3-Methylhexane[1]
Identifiers
CAS Number	589-34-4 Y (R): 78918-91-9 (S): 6131-24-4
3D model (JSmol)	Interactive image (R): Interactive image (S): Interactive image
Beilstein Reference	1718739
ChEBI	CHEBI:143848
ChEMBL	ChEMBL31377 Y
ChemSpider	11023 Y (R): 21428376 (S): 553610 Y
ECHA InfoCard	100.008.768
EC Number	209-643-3
PubChem CID	11507 (R): 13800357 (S): 638046
UNII	1J3ZK6L6VY Y (R): 597F91020C (S): 66M56682SH
UN number	1206
CompTox Dashboard (EPA)	DTXSID3044334
InChI InChI=1S/C7H16/c1-4-6-7(3)5-2/h7H,4-6H2,1-3H3 Y Key: VLJXXKKOSFGPHI-UHFFFAOYSA-N Y (R): InChI=1S/C7H16/c1-4-6-7(3)5-2/h7H,4-6H2,1-3H3/t7-/m1/s1 Key: VLJXXKKOSFGPHI-SSDOTTSWSA-N (S): InChI=1S/C7H16/c1-4-6-7(3)5-2/h7H,4-6H2,1-3H3/t7-/m0/s1 Key: VLJXXKKOSFGPHI-ZETCQYMHSA-N
SMILES CCCC(C)CC (R): CCC[C@H](C)CC (S): CCC[C@@H](C)CC
Properties
Chemical formula	C7H16
Molar mass	100.205 g·mol−1
Appearance	Colorless liquid
Odor	Odorless
Density	686 mg mL−1
Melting point	−119.40 °C; −182.92 °F; 153.75 K
Boiling point	91.6 to 92.2 °C; 196.8 to 197.9 °F; 364.7 to 365.3 K
log P	4.118
Vapor pressure	14.7 kPa (at 37.7 °C)
Henry's law constant (kH)	3.2 nmol Pa−1 kg−1
Refractive index (nD)	1.388–1.389
Thermochemistry
Heat capacity (C)	216.7 J K−1 mol−1 (at −9.0 °C)
Std molar entropy (S⦵298)	309.6 J K−1 mol−1
Std enthalpy of formation (ΔfH⦵298)	−228.7–−226.1 kJ mol−1
Std enthalpy of combustion (ΔcH⦵298)	−4.8151–−4.8127 MJ mol−1
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H304, H315, H336, H411
Precautionary statements	P210, P233, P240, P241, P242, P243, P261, P264, P271, P273, P280, P301+P310, P302+P352, P303+P361+P353, P304+P340, P312, P321, P331, P332+P313, P362, P370+P378, P391, P403+P233, P403+P235, P405, P501
Flash point	−1.0 °C (30.2 °F; 272.1 K)
Autoignition temperature	280 °C (536 °F; 553 K)
Explosive limits	1–7%
Related compounds
Related alkanes	2-Methylpentane 3-Methylpentane 3-Ethylpentane 2-Methylhexane 2-Methylheptane 3-Methylheptane
Related compounds	2-Ethyl-1-butanol Valnoctamide 2-Ethylhexanol Valpromide 2-Ethylhexanoic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

The molecule is chiral, and is one of the two isomers of heptane to have this property, the other being its structural isomer 2,3-dimethylpentane. The enantiomers are (R)-3-methylhexane^[3] and (S)-3-methylhexane.^[4]