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1-Hexene

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1-Hexene Basic information

Product Name:
1-Hexene
CAS:
592-41-6
MF:
C6H12
MW:
84.16
EINECS:
209-753-1
Mol File:
592-41-6.mol
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1-Hexene Chemical Properties

Melting point:
-140 °C
Boiling point:
60-66 °C(lit.)
Density 
0.678 g/mL at 25 °C(lit.)
vapor density 
3 (vs air)
vapor pressure 
155 mm Hg ( 21.1 °C)
refractive index 
n20/D 1.388(lit.)
Flash point:
−19 °F
storage temp. 
Refrigerator
solubility 
Soluble in alcohol, benzene, chloroform, ether, petroleum (Weast, 1986), and many other hydrocarbons including alkenes amd alkanes.
form 
Liquid
pka
>14 (Schwarzenbach et al., 1993)
Specific Gravity
0.673
color 
Clear colorless
Odor
Mild, pleasant.
Odor Threshold
0.14ppm
Water Solubility 
0.005 g/100 mL
BRN 
1209240
Henry's Law Constant
(atm?m3/mol): 0.435 at 25 °C (Hine and Mookerjee, 1975)
Exposure limits
ACGIH TLV: TWA 30 ppm (adopted).
Stability:
Stable. Highly flammable - note low flash point. Incompatible with strong oxidizing agents, strong acids, combustible material.
InChIKey
LIKMAJRDDDTEIG-UHFFFAOYSA-N
CAS DataBase Reference
592-41-6(CAS DataBase Reference)
NIST Chemistry Reference
1-Hexene(592-41-6)
EPA Substance Registry System
1-Hexene (592-41-6)
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Safety Information

Hazard Codes 
F,Xn,N
Risk Statements 
11-65-67-51/53
Safety Statements 
9-16-23-29-62-57-33-22
RIDADR 
UN 2370 3/PG 2
WGK Germany 
1
RTECS 
MP6670000
Autoignition Temperature
487 °F
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29012980
Hazardous Substances Data
592-41-6(Hazardous Substances Data)

MSDS

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1-Hexene Usage And Synthesis

Chemical Properties

colourless liquid

Chemical Properties

1-Hexene, C6H12, is a colorless liquid, which is highly volatile and flammable. Hexene is a component of refinery gas and coffee aroma.

Physical properties

Clear, colorless, flammable liquid with a characteristic, sweetish odor similar to hexane or 1-pentene. An odor threshold concentration of 140 ppbv was reported by Nagata and Takeuchi (1990).

Uses

Definition

ChEBI: An alkene that is hexane carrying a double bond at position 1.

General Description

A clear colorless liquid with a petroleum like odor. Flash point -9°F. Less dense than water and insoluble in water. Vapors heavier than air. Used as a solvent, paint thinner, and chemical reaction medium.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

1--HEXENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas.

Hazard

Irritant. Highly flammable, dangerous fire risk.

Health Hazard

Inhalation may cause giddiness or incoordination similar to that from gasoline vapor. Prolonged exposure to high concentrations may induce loss of consciousness or death.

Chemical Reactivity

Reactivity with Water No reaction; Reactivity with Common Materials: No reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Source

California Phase II reformulated gasoline contained 1-hexene at a concentration of 770 mg/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without catalytic converters were 430 and 18,400 μg/km, respectively (Schauer et al., 2002).
According to Chevron Phillips Company’s (2005) product literature, the maximum concentration present in 99.7% tert-butyl mercaptan is 0.05 wt %.

Environmental Fate

Biological. Biooxidation of 1-hexene may occur yielding 5-hexen-1-ol, which may oxidize to give 5-hexenoic acid (Dugan, 1972). Washed cell suspensions of bacteria belonging to the genera Mycobacterium, Nocardia, Xanthobacter, and Pseudomonas and growing on selected alkenes metabolized 1-hexene to 1,2-epoxyhexane (Van Ginkel et al., 1987).
Photolytic. The following rate constants were reported for the reaction of 1-hexene and OH radicals in the atmosphere: 1.9 x 10-12 cm3/molecule?sec at 300 K (Hendry and Kenley, 1979); 3.75 x 10-11 cm3/molecule?sec at 295 K (Atkinson and Carter, 1984); 3.18 x 10-11 cm3/molecule?sec (Atkinson, 1990). The following rate constants were reported for the reaction of 1-hexene and ozone in the atmosphere: 1.10 x 10-17 cm3/molecule?sec (Bufalini and Altshuller, 1985); 9.0 x 10-17 cm3/molecule?sec (Cadle and Schadt, 1952); 1.40 x 10-17 cm3/molecule?sec (Cox and Penkett, 1972); 1.08 x 10-17 cm3/molecule?sec at 294 K (Adeniji et al., 1981).
Chemical/Physical. Complete combustion in air yields carbon dioxide and water.
1-Hexene is not expected to hydroxyze in water.

Purification Methods

Purify it by stirring over Na/K alloy for at least 6hours, then fractionally distil it from sodium under nitrogen. [Beilstein 1 IV 828.]

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J & K SCIENTIFIC LTD.
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010-82848833- ;010-82848833-
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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3B Pharmachem (Wuhan) International Co.,Ltd.
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821-50328103-801
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Alfa Aesar
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400-610-6006; 021-67582000
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TCI (Shanghai) Development Co., Ltd.
Tel:
021-67121386 / 800-988-0390
Email:
Sales-CN@TCIchemicals.com
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