2,3-Dimethylpentane

CAS NO.：565-59-3
Empirical Formula: C7H16
Molecular Weight: 100.2
MDL number: MFCD00009337
EINECS: 209-280-0
SAFETY DATA SHEET (SDS)
Update Date: 2023-12-26 11:30:52

What is 2,3-Dimethylpentane?

Chemical properties

clear colorless liquid

Physical properties

Clear, colorless, flammable liquid with an odor resembling hexane. An odor threshold concentration of 4.5 ppm_v was reported by Nagata and Takeuchi (1990).

The Uses of 2,3-Dimethylpentane

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.

Properties of 2,3-Dimethylpentane

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.)
Flash point:	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
Odor Threshold	4.5ppm
explosive limit	~7%
Water Solubility	Insoluble in water.
BRN	1718734
Henry's Law Constant	1.72(atm?m³/mol) at 25 °C (Mackay and Shiu, 1981)
Exposure limits	ACGIH: TWA 400 ppm; STEL 500 ppm
Dielectric constant	1.9399999999999999
CAS DataBase Reference	565-59-3(CAS DataBase Reference)
EPA Substance Registry System	2,3-Dimethylpentane (565-59-3)

Safety information for 2,3-Dimethylpentane

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H225:Flammable liquids H304:Aspiration hazard H315:Skin corrosion/irritation H336:Specific target organ toxicity,single exposure; Narcotic effects H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P273:Avoid release to the environment. P331:Do NOT induce vomiting. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.