2-Methyloctane

2-Methyloctane

Names
Preferred IUPAC name 2-Methyloctane[1]
Identifiers
CAS Number	3221-61-2 Y
3D model (JSmol)	Interactive image
Beilstein Reference	1696917
ChEBI	CHEBI:32892 Y
ChEMBL	ChEMBL335900 Y
ChemSpider	7849 Y
ECHA InfoCard	100.019.771
EC Number	203-913-4
Gmelin Reference	240576
MeSH	nonane
PubChem CID	8141
RTECS number	RA6115000
UNII	T9W3VH6G10 Y
UN number	1920
CompTox Dashboard (EPA)	DTXSID30863125
InChI InChI=1S/C9H20/c1-3-5-7-9-8-6-4-2/h3-9H2,1-2H3 Y Key: BKIMMITUMNQMOS-UHFFFAOYSA-N Y
SMILES CCCCCCCCC
Properties
Chemical formula	C9H20
Molar mass	128.259 g·mol−1
Appearance	Colorless liquid
Odor	Gasoline-like
Density	0.718 g/mL
Melting point	−54.1 to −53.1 °C; −65.5 to −63.7 °F; 219.0 to 220.0 K
Boiling point	150.4 to 151.0 °C; 302.6 to 303.7 °F; 423.5 to 424.1 K
log P	5.293
Vapor pressure	0.59 kPa (at 25.0 °C)
Henry's law constant (kH)	1.7 nmol Pa−1 kg−1
Magnetic susceptibility (χ)	−108.13×10−6 cm3/mol
Refractive index (nD)	1.405
Thermochemistry
Heat capacity (C)	284.34 J K−1 mol−1
Std molar entropy (S⦵298)	393.67 J K−1 mol−1
Std enthalpy of formation (ΔfH⦵298)	−275.7 – −273.7 kJ mol−1
Std enthalpy of combustion (ΔcH⦵298)	−6125.75 – −6124.67 kJ mol−1
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H226, H304, H315, H319, H332, H336
Precautionary statements	P261, P301+P310, P305+P351+P338, P331
NFPA 704 (fire diamond)	0 3 0
Flash point	31.0 °C (87.8 °F; 304.1 K)
Autoignition temperature	205.0 °C (401.0 °F; 478.1 K)
Explosive limits	0.87–2.9%
NIOSH (US health exposure limits):
PEL (Permissible)	none[2]
REL (Recommended)	TWA 200 ppm (1050 mg/m3)[2]
IDLH (Immediate danger)	N.D.[2]
Related compounds
Related alkanes	Nonane 3-Methyloctane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

2-Methyloctane is a branched alkane hydrocarbon with the chemical formula C₉H₂₀. It is a colorless, flammable liquid

Combustion reactions

2-Methyloctane burns in the same way as other alkanes. Where there is enough oxygen, nonane burns to form water and carbon dioxide, so 2-methyloctane would do the same.

C₉H₂₀ + 14 O₂ → 9 CO₂ + 10 H₂O

When insufficient oxygen is present for complete combustion, carbon monoxide is produced.

2 C₉H₂₀ + 19 O₂ → 18 CO + 20 H₂O

See also

• List of isomers of nonane

References