| Identification | More | [Name]
Cyclohexa-1,4-diene | [CAS]
628-41-1 | [Synonyms]
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-Cyclohexadiene, 97% stab. with 0.1% BHT
1,4-Cyclohexadiene, 97%, stabilized
1,4-Cyclohexadiene (stabilized with BHT) | [EINECS(EC#)]
211-043-1 | [Molecular Formula]
C6H8 | [MDL Number]
MFCD00001535 | [Molecular Weight]
80.13 | [MOL File]
628-41-1.mol |
| Chemical Properties | Back Directory | [Appearance]
colourless liquid | [Melting point ]
-49.2 °C
| [Boiling point ]
88-89 °C (lit.) | [density ]
0.847 g/mL at 25 °C(lit.)
| [refractive index ]
n20/D 1.472(lit.)
| [Fp ]
20 °F
| [storage temp. ]
0-6°C | [form ]
Liquid | [color ]
Clear colorless | [Stability:]
Stable. Highly flammable. Incompatible with strong oxidizing agents. | [Water Solubility ]
Miscible with organic solvents like diethyl ether, tetrahydrofuran and toluene.Immiscible with water. | [BRN ]
1900733 | [Dielectric constant]
2.2599999999999998 | [Exposure limits]
ACGIH: TWA 2 mg/m3
NIOSH: TWA 10 mg/m3 | [InChI]
1S/C6H8/c1-2-4-6-5-3-1/h1-2,5-6H,3-4H2 | [InChIKey]
UVJHQYIOXKWHFD-UHFFFAOYSA-N | [SMILES]
C1C=CCC=C1 | [LogP]
2.300 | [CAS DataBase Reference]
628-41-1(CAS DataBase Reference) | [NIST Chemistry Reference]
1,4-Cyclohexadiene(628-41-1) | [EPA Substance Registry System]
628-41-1(EPA Substance) |
| Questions And Answer | Back Directory | [Preparation]
Cyclohexa-1,4-diene is typically prepared by Birch reduction, which involves reducing benzene with metallic lithium or sodium in liquid ammonia. However, Cyclohexa-1,4-diene is unstable and readily oxidized to aromatic benzene. In the laboratory, this conversion is usually carried out using olefins (such as styrene) and transfer hydrogenation agents (such as charcoal-based palladium) as catalysts. |
| Safety Data | Back Directory | [Symbol(GHS) ]
 
GHS02,GHS08 | [Signal word ]
Danger | [Hazard statements ]
H225-H340-H350-H373 | [Precautionary statements ]
P202-P210-P233-P240-P241-P308+P313 | [Hazard Codes ]
F,T | [Risk Statements ]
R11:Highly Flammable.
R48/20/21/22:Harmful: danger of serious damage to health by prolonged exposure through inhalation, and in contact with skin and if swallowed .
R45:May cause cancer. | [Safety Statements ]
S53:Avoid exposure-obtain special instruction before use .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S16:Keep away from sources of ignition-No smoking . | [RIDADR ]
UN 3295 3/PG 2
| [WGK Germany ]
3
| [F ]
23 | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29021990 | [Storage Class]
3 - Flammable liquids | [Hazard Classifications]
Carc. 1A
Flam. Liq. 2
Muta. 1B
STOT RE 2 |
| Hazard Information | Back Directory | [Chemical Properties]
colourless liquid | [Uses]
Forms benzene at elevated temperatures in the presence of a ruthenium(II)-triphenylphosphine catalyst.1 | [Uses]
Reagent for selectively cleaving benzyl esters in the presence of benzyl ethers by catalytic H-transfer. | [Definition]
ChEBI: Cyclohexa-1,4-diene is a cyclohexadiene. | [General Description]
1,4-Cyclohexadiene is an effective hydrogen donor for catalytic hydrogenation reactions. It can rapidly replace benzyl groups of N-benzyloxycarbamates, benzyl esters, benzyl ethers and benzyl amines with hydrogen. It forms benzene at elevated temperatures in the presence of a ruthenium(II)-triphenylphosphine catalyst.
| [Purification Methods]
Dry the diene over CaCl2 and distil it in a vacuum under N2. [Hückel & W.rffel Chem Ber 88 338 1955, Giovannini & Wegmüller Helv Chim Acta 42 1142 1959.] [Beilstein 5 IV 385.] |
|
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Alfa Aesar
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Energy Chemical
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400-0056266 |
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www.energy-chemical.com |
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Maya High Purity Chemicals
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