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1,4-Cyclohexanediene

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Name

1,4-Cyclohexanediene

EINECS 211-043-1
CAS No. 628-41-1 Density 0.847
PSA 0.00000 LogP 1.89260
Solubility Miscible with organic solvents like diethyl ether, tetrahydrofuran and toluene.Immiscible with water. Melting Point -49.2 ºC
Formula C6H8 Boiling Point 81-82 ºC
Molecular Weight 80.1295 Flash Point -6 ºC
Transport Information UN 3295 Appearance Clear, colorless liquid.
Safety A very dangerous fire hazard when exposed to heat, flame, or oxidizers. When heated to decomposition it emits acrid smoke and fumes. Risk Codes R45;R46;R11;R48/20/21/22   
Molecular Structure Molecular Structure of 628-41-1 (Cyclohexa-1,4-diene) Hazard Symbols
Synonyms

1,4-Dihydrobenzene

Article Data 1

1,4-Cyclohexanediene Synthetic route

2235-12-3

1,3,5-hexatriene

A

592-57-4

cyclohexa-1,3-diene radical cation

B

628-41-1

1,4-cyclohexadiene radical cation

C

62015-34-3

trans-1,3,5-hexatriene radical cation

D

62015-35-4

(Z)-1,3,5-hexatriene radical cation

Conditions
ConditionsYield
In dichloromethane at -253.2℃; Irradiation; electronic spectra of the produced radical mixture; the radicals were investigated;
1165952-92-0

cyclohexa-1,4-diene

A

592-57-4

cyclohexa-1,3-diene radical cation

B

628-41-1

1,4-cyclohexadiene radical cation

C

62015-34-3

trans-1,3,5-hexatriene radical cation

D

62015-35-4

(Z)-1,3,5-hexatriene radical cation

Conditions
ConditionsYield
In dichloromethane at -253.2℃; Irradiation; electronic spectra of the produced radical mixture; the radicals were investigated;
1165952-91-9

cyclohexa-1,3-diene

A

592-57-4

cyclohexa-1,3-diene radical cation

B

628-41-1

1,4-cyclohexadiene radical cation

C

62015-34-3

trans-1,3,5-hexatriene radical cation

D

62015-35-4

(Z)-1,3,5-hexatriene radical cation

Conditions
ConditionsYield
In dichloromethane at -253.2℃; Irradiation; electronic spectra of the produced radical mixture; the radicals were investigated;

1,4-Cyclohexanediene Chemical Properties

Chemical Name: Cyclohexa-1,4-diene
IUPAC NAME: Cyclohexa-1,4-diene
CAS No.: 628-41-1
EINECS: 211-043-1
Molecular Formula: C6H8
Molecular Weight: 80.13 g/mol
Melting Point: -49.2 °C
Density: 0.861 g/cm3
Boiling Point: 85.5 °C at 760 mmHg
Storage temp.: 0-6°C
Following is the structure of 1,4-Cyclohexadiene (CAS No.628-41-1):


The chemical synonymous of 1,4-Cyclohexadiene (CAS No.628-41-1) are 1,4-Cyclohexadiene ; 1,4-Dihydrobenzene ; Cyclohexa-1,4-diene ; 1,4-Cyclohexadiene, stab. ; 1,4-Cyclohexadiene, standard for gc, sta b. ; 1,4-Cyclohexadiene,97%stab.with0.1%hydroquinone ; 1,4-Cyclohexadiene, stabilized, 97% ; 1,4-Cyclohexanediene

1,4-Cyclohexanediene Safety Profile

A very dangerous fire hazard when exposed to heat, flame, or oxidizers. When heated to decomposition it emits acrid smoke and fumes.
Hazard Codes: FlammableToxicT
Risk Statements about 1,4-Cyclohexadiene (CAS No.628-41-1):
R11:Highly flammable. 
R45:May cause cancer. 
R46:May cause heritable genetic damage.
Safety Statements about 1,4-Cyclohexadiene (CAS No.628-41-1):
S16:Keep away from sources of ignition. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S53:Avoid exposure - obtain special instructions before use.
Attention:
1. Storage: Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
2. Handling: Avoid ingestion and inhalation. Avoid contact with eyes, skin, and clothing. Wash thoroughly after handling. Use only in a well ventilated area. Ground and bond containers when transferring material. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

1,4-Cyclohexanediene Specification

1,4-Cyclohexadiene (CAS No.628-41-1) is a highly flammable cycloalkene that occurs as a colorless clear liquid.It may be prepared from benzene using lithium or sodium in liquid ammonia, this process being known as a Birch reduction. However it is easily oxidised to benzene, the driving force being the formation of an aromatic ring. The conversion to an aromatic system may be performed in the laboratory using an alkene such as styrene, along with a hydrogen transfer agent such as palladium metal supported on charcoal.

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