2,3-Dimethylpentane Chemical Properties

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

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)

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

Hazard Codes 

N-Xn-F,N,Xn,F

Risk Statements 

36/37/38-67-65-50/53-38-11

Safety Statements 

16-26-36/37/39-61-9

RIDADR 

UN 3295 3/PG 2

WGK Germany 

3

RTECS 

SA0428000

Autoignition Temperature

639 °F

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

29011000

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

2,3-Dimethylpentane Usage And Synthesis

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).

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.

2,3-Dimethylpentane(565-59-3)Related Product Information

• ethyl 3-(2,2-dichlorovinyl)-2,2-dimethyl-1-cyclopropanecarboxylate
• ALPHA-(-)-THUJONE
• (-)-TRANS-MYRTANOL
• CHRYSANTHEMYL ALCOHOL
• Ethyl chrysanthemumate
• ALPHA-PINENE
• PERHYDROFLUORENE
• (1R)-(+)-ALPHA-PINENE
• (-)-CIS-MYRTANYLAMINE
• (-)-MYRTENOL
• 3-CARENE
• beta-Pinene
• (-)-VERBENONE
• PINONIC ACID
• 2,4-DIBROMO-2,4-DIMETHYL-3-PENTANONE
• HEXANES
• Bis(2,4-dimethylpentane-2,4-glycolato)diboron
• 2,2-Dimethylpentane-1,5-dioic acid