ChemicalBook CAS DataBase List 565-59-3

565-59-3

Name	2,3-Dimethylpentane
CAS	565-59-3
EINECS(EC#)	209-280-0
Molecular Formula	C7H16
MDL Number	MFCD00009337
Molecular Weight	100.2
MOL File	565-59-3.mol

Chemical Properties

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.
Thermal Conductivity	0.1059 W/(m·K) at 25 ℃
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
InChI	1S/C7H16/c1-5-7(4)6(2)3/h6-7H,5H2,1-4H3
InChIKey	WGECXQBGLLYSFP-UHFFFAOYSA-N
SMILES	CCC(C)C(C)C
CAS DataBase Reference	565-59-3(CAS DataBase Reference)
EPA Substance Registry System	2,3-Dimethylpentane (565-59-3)

Safety Data

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. less more
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 . less more
RIDADR	UN 3295 3/PG 2
WGK Germany	3
RTECS	SA0428000
Autoignition Temperature	639 °F
TSCA	Yes
HazardClass	3
PackingGroup	II
HS Code	29011000
Storage Class	3 - Flammable liquids
Hazard Classifications	Aquatic Acute 1 Aquatic Chronic 1 Asp. Tox. 1 Flam. Liq. 2 Skin Irrit. 2 STOT SE 3

Hazard Information

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.

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.

Material Safety Data Sheet(MSDS)

Spectrum Detail

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