| Identification | More | [Name]
2,3-Dimethylpentane | [CAS]
565-59-3 | [Synonyms]
1,2,3-TRIMETHYLBUTANE
2,3-DIMETHYLPENTANE
2-ETHYL-3-METHYLBUTANE
3,4-DIMETHYLPENTANE
ALKANE C7
2,3-dimethyl-pentan
2,3-DIMETHYLPENTANE, 99+%
2,3-DIMETHYLPENTANE, STANDARD FOR GC
2,3-Dimethylpentane,97%
Pentane, 2,3-dimethyl- | [EINECS(EC#)]
209-280-0 | [Molecular Formula]
C7H16 | [MDL Number]
MFCD00009337 | [Molecular Weight]
100.2 | [MOL File]
565-59-3.mol |
| Chemical Properties | Back Directory | [Appearance]
clear colorless liquid | [Melting point ]
-107.55°C (estimate) | [Boiling point ]
89-90 °C (lit.) | [density ]
0.695 g/mL at 25 °C(lit.)
| [vapor density ]
3.45 (vs air)
| [vapor pressure ]
2.35 psi ( 37.7 °C)
| [refractive index ]
n20/D 1.392(lit.)
| [Fp ]
20 °F
| [storage temp. ]
Flammables area | [solubility ]
Soluble in acetone, alcohol, benzene, chloroform, and ether (Weast, 1986) | [form ]
Liquid | [pka]
>14 (Schwarzenbach et al., 1993) | [color ]
Colorless to Almost colorless | [explosive limit]
~7% | [Odor Threshold]
4.5ppm | [Water Solubility ]
Insoluble in water. | [BRN ]
1718734 | [Henry's Law Constant]
1.72(atm?m3/mol) at 25 °C (Mackay and Shiu, 1981) | [Dielectric constant]
1.9399999999999999 | [Exposure limits]
ACGIH: TWA 400 ppm; STEL 500 ppm | [CAS DataBase Reference]
565-59-3(CAS DataBase Reference) | [EPA Substance Registry System]
2,3-Dimethylpentane (565-59-3) |
| Safety Data | Back Directory | [Hazard Codes ]
N-Xn-F,N,Xn,F | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin .
R67:Vapors may cause drowsiness and dizziness.
R65:Harmful: May cause lung damage if swallowed.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R38:Irritating to the skin.
R11:Highly Flammable. | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S9:Keep container in a well-ventilated place . | [RIDADR ]
UN 3295 3/PG 2
| [WGK Germany ]
3
| [RTECS ]
SA0428000
| [Autoignition Temperature]
639 °F | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29011000 |
| Hazard Information | Back Directory | [Chemical Properties]
clear colorless liquid | [Physical properties]
Clear, colorless, flammable liquid with an odor resembling hexane. An odor threshold
concentration of 4.5 ppmv was reported by Nagata and Takeuchi (1990). | [Uses]
It is used in the liquid-phase oxidation of 2,4-dimethylpentane and in a study on the preparation and the physical constants of a number of alkanes and cycloalkanes. | [General Description]
2,3-Dimethylpentane belongs to the class of volatile organic compounds (VOCs). | [Source]
In diesel engine exhaust at a concentration of 0.9% of emitted hydrocarbons (quoted,
Verschueren, 1983). Schauer et al. (1999) reported 2,3-dimethylpentane in a diesel-powered
medium-duty truck exhaust at an emission rate of 720 μg/km.
California Phase II reformulated gasoline contained 2,3-dimethylpentane at a concentration of
29.4 g/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without
catalytic converters were 5.34 and 714 mg/km, respectively (Schauer et al., 2002). | [Environmental Fate]
Photolytic. A photooxidation rate constant of 3.4 x 10-12 cm3/molecule?sec was reported for the
gas-phase reaction of 2,3-dimethylpentane and OH radicals (Atkinson, 1990).
Chemical/Physical. Complete combustion in air yields carbon dioxide and water vapor. 2,3-
Dimethylpentane will not hydrolyze because it has no hydrolyzable functional group. | [Toxics Screening Level]
The initial threshold screening level (ITSL) for 2,3-dimethylpentane is 3,500 μg/m3 based on an 8 hr. averaging
time. |
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