| Identification | More | [Name]
2-methylpentane | [CAS]
107-83-5 | [Synonyms]
2-METHYLPENTANE
ISOHEXANE
METHYLPENTANE
(CH3)2CH(CH2)2CH3
1,1-dimethylbutane
2-methyl-pentan
pentane,2-methyl-
2-METHYLPENTANE(ISO-HEXANE)
Methylpentane,99%
2-METHYLPENTANE, 99+%
2-METHYLPENTANE, 1000MG, NEAT
2-METHYLPENTANE, STANDARD FOR GC
2-Methylpentane, pure, 99+%
2-METHYLPENTANE 99% FOR ANALYTICAL PURPOSE
2-Methylpentane, 99+%, pure
2-Methylpentane, pure | [EINECS(EC#)]
203-523-4 | [Molecular Formula]
C6H14 | [MDL Number]
MFCD00009406 | [Molecular Weight]
86.18 | [MOL File]
107-83-5.mol |
| Chemical Properties | Back Directory | [Appearance]
colourless liquid | [Melting point ]
-154 °C (lit.) | [Boiling point ]
62 °C (lit.) | [density ]
0.66 | [vapor density ]
3 (vs air)
| [vapor pressure ]
6.77 psi ( 37.7 °C)
| [refractive index ]
n20/D 1.371(lit.)
| [Fp ]
−10 °F
| [storage temp. ]
Flammables area | [solubility ]
0.14g/l | [form ]
Liquid | [color ]
Clear colorless | [Stability:]
Stable. Highly flammable. Gas/vapour mixtures explosive at some concentrations. | [explosive limit]
1.2-7.4%(V) | [Odor Threshold]
7ppm | [Water Solubility ]
Miscible with alcohol, ether, acetone and chloroform. Immiscible with water. | [BRN ]
1730735 | [Henry's Law Constant]
0.697, 0.694, 0.633, 0.825, and 0.848 (atm?m3/mol)at 10, 15, 20, 25, and 30 °C, respectively (EPICS, Ashworth
et al., 1988) | [Dielectric constant]
1.8899999999999999 | [Exposure limits]
ACGIH TLV: TWA and STEL for all isomers except n-hexane are 500 and
1,000 ppm, respectively (adopted). | [LogP]
3.214 at 25℃ and pH7 | [Uses]
Organic synthesis, solvent. | [CAS DataBase Reference]
107-83-5(CAS DataBase Reference) | [EPA Substance Registry System]
2-Methylpentane (107-83-5) |
| Safety Data | Back Directory | [Hazard Codes ]
F,Xn,N | [Risk Statements ]
R11:Highly Flammable.
R38:Irritating to the skin.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R65:Harmful: May cause lung damage if swallowed.
R67:Vapors may cause drowsiness and dizziness. | [Safety Statements ]
S9:Keep container in a well-ventilated place .
S16:Keep away from sources of ignition-No smoking .
S29:Do not empty into drains .
S33:Take precautionary measures against static discharges .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label . | [RIDADR ]
UN 1208 3/PG 2
| [WGK Germany ]
2
| [RTECS ]
SA2985000
| [Autoignition Temperature]
583 °F | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29012990 | [Hazardous Substances Data]
107-83-5(Hazardous Substances Data) |
| Raw materials And Preparation Products | Back Directory | [Preparation Products]
6-BROMO-4-CHLOROQUINOLINE-->7-BROMO-3-TRIFLUOROMETHYL-IMIDAZO[1,2-B][1,2,4]TRIAZINE-->1-(2-CYANOPHENYL)PIPERAZINE-->6-bromoquinolin-4(3H)-one-->2,4-DIMETHOXYPYRIMIDINE-6-CARBOXYLIC ACID-->Troglitazone-->3-Pentanone, 2-methyl-, oxime-->(R)-(-)-2-Amino-1-butanol-->3,3-Dimethylpentane-->PERFLUORO-2-METHYLPENTANE-->2-METHYL-2-PENTANOL-->2,3,4-TRIMETHYLPENTANE-->8-HYDROXY-2H-BENZO[B][1,4]OXAZIN-3(4H)-ONE-->N-TERT-BUTOXYCARBONYL-4-(4-TOLUENESULFONYLOXYMETHYL)PIPERIDINE-->Tetradecafluorohexane-->2,4-DIMETHYLPENTANE |
| Hazard Information | Back Directory | [General Description]
Watery liquid with a gasoline-like odor, Floats on water. Produces an irritating vapor. | [Reactivity Profile]
Saturated aliphatic hydrocarbons, such as ISOHEXENE, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents. | [Air & Water Reactions]
Highly flammable. | [Hazard]
Flammable, dangerous fire risk, reacts vig-orously with oxidizing materials. | [Health Hazard]
Inhalation causes irritation of respiratory tract, cough, mild depression, cardiac arrhythmias. Aspiration causes severe lung irritation, coughing, pulmonary edema; excitement followed by depression. Ingestion causes nausea, vomiting, swelling of abdomen, headache, depression. | [Chemical Properties]
2-Methylpentane (isohexane), C6H14, is a flammable liquid
with a specific gravity of 0.653. It occurs naturally in petroleum
and gas and as a plant volatile. It is found in sources
associated with petroleum products such as petroleum manufacture,
natural gas, turbines, and automobiles. | [Chemical Properties]
colourless liquid | [Physical properties]
Clear, colorless, very flammable liquid with an odor similar to hexane. An odor threshold
concentration of 8.9 ppmv was reported by Nagata and Takeuchi (1990). | [Definition]
ChEBI: 2-Methylpentane is an alkane. | [Production Methods]
Isohexane is manufactured by fractional distillation of
gasoline derived from crude oil or liquid product derived
from natural gas. | [Source]
Schauer et al. (1999) reported 2-methylpentane in a diesel-powered medium-duty truck
exhaust at an emission rate of 930 μg/km.
A constituent in gasoline. Harley et al. (2000) analyzed the headspace vapors of three grades of
unleaded gasoline where ethanol was added to replace methyl tert-butyl ether. The gasoline vapor
concentrations of 2-methylpentane in the headspace were 9.3 wt % for regular grade, 9.8 wt % for mid-grade, and 10.4 wt % for premium grade.
Schauer et al. (2001) measured organic compound emission rates for volatile organic
compounds, gas-phase semi-volatile organic compounds, and particle-phase organic compounds
from the residential (fireplace) combustion of pine, oak, and eucalyptus. The gas-phase emission
rate of 2-methylpentane was 8.6 mg/kg of pine burned. Emission rates of 2-methylpentane were
not measured during the combustion of oak and eucalyptus.
California Phase II reformulated gasoline contained 2-methylpentane at a concentration of 36.9
g/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without
catalytic converters were 6.31 and 827 mg/km, respectively (Schauer et al., 2002).
Reported as an impurity (0.1 wt %) in 99.0–99.7 wt % 2,3-dimethylbutane (Chevron Phillips,
2004). | [Environmental Fate]
Photolytic. When synthetic air containing gaseous nitrous acid and 2-methylpentane was
exposed to artificial sunlight (λ = 300–450 nm), acetone, propionaldehyde, peroxyacetal nitrate,
peroxypropionyl nitrate, and possibly two isomers of hexyl nitrate and propyl nitrate formed as
products (Cox et al., 1980).
Based on a photooxidation rate constant of 5.6 x 10-12 cm3/molecule?sec for the reaction of 2-
methylpentane and OH radicals, the atmospheric lifetime is 25 h (Altshuller, 1991).
Chemical/Physical: Complete combustion in air yields carbon dioxide and water vapor. 2-
Methylpentane will not hydrolyze because it does not contain a hydrolyzable functional group. | [Purification Methods]
Purify it by azeotropic distillation with MeOH, followed by washing out the MeOH with water, drying (CaCl2, then sodium), and distilling it. [Forziati et al. J Res Nat Bur Stand 36 129 1946.] |
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