Cyclohexa-1,4-diene

Cyclohexa-1,4-diene
Skeletal formula with all implicit hydrogen shown, skeletal formula; stereo, skeletal formula with all explicit hydrogens added, all of 1,4-cyclohexadiene
1,4-Cyclohexadiene molecule
1,4-Cyclohexadiene molecule
Names
Preferred IUPAC name
Cyclohexa-1,4-diene[1]
Other names
1,4-Cyclohexadiene[citation needed]
1,4-Dihydrobenzene[citation needed]
Identifiers
3D model (JSmol)
Abbreviations 1,4-CHDN
1900733
ChEBI
ChemSpider
ECHA InfoCard 100.010.040 Edit this at Wikidata
EC Number
  • 211-043-1
1656
MeSH 1,4-cyclohexadiene
UNII
UN number 3295
  • InChI=1S/C6H8/c1-2-4-6-5-3-1/h1-2,5-6H,3-4H2 checkY
    Key: UVJHQYIOXKWHFD-UHFFFAOYSA-N checkY
  • C1C=CCC=C1
Properties
C6H8
Molar mass 80.130 g·mol−1
Appearance Colorless liquid
Density 0.847 g cm−3
Melting point −50 °C; −58 °F; 223 K
Boiling point 82 °C; 179 °F; 355 K
-48.7·10−6 cm3/mol
1.472
Thermochemistry
142.2 J K−1 mol−1
189.37 J K−1 mol−1
63.0-69.2 kJ mol−1
-3573.5--3567.5 kJ mol−1
Hazards
GHS labelling:
GHS02: Flammable GHS08: Health hazard
Danger
H225, H340, H350, H373
P201, P210, P308+P313
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
3
0
Flash point −7 °C (19 °F; 266 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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1,4-Cyclohexadiene is an organic compound with the formula C6H8. It is a colourless, flammable liquid that is of academic interest as a prototype of a large class of related compounds called terpenoids, an example being γ-terpinene. An isomer of this compound is 1,3-cyclohexadiene.

  1. ^ "1,4-cyclohexadiene - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 27 March 2005. Identification and Related Records. Retrieved 12 October 2011.