Cyclohexa-1,4-diene

Cyclohexa-1,4-diene
Names
	Preferred IUPAC name Cyclohexa-1,4-diene
	Other names 1,4-Cyclohexadiene; 1,4-Dihydrobenzene
Identifiers
CAS Number	628-41-1 ;
3D model (JSmol)	Interactive image;
Abbreviations	1,4-CHDN
Beilstein Reference	1900733
ChEBI	CHEBI:37611 ;
ChemSpider	11838 ;
ECHA InfoCard	100.010.040
EC Number	211-043-1;
Gmelin Reference	1656
MeSH	1,4-cyclohexadiene
PubChem CID	12343;
UNII	0F8Z5909QZ ;
UN number	3295
CompTox Dashboard (EPA)	DTXSID0060854 ;
	InChI InChI=1S/C6H8/c1-2-4-6-5-3-1/h1-2,5-6H,3-4H2 Key: UVJHQYIOXKWHFD-UHFFFAOYSA-N ;
	SMILES C1C=CCC=C1;
Properties
Chemical formula	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
Magnetic susceptibility (χ)	−48.7·10−6 cm3/mol
Refractive index (nD)	1.472
Thermochemistry
Heat capacity (C)	142.2 J K−1 mol−1
Std molar; entropy (S⦵298)	189.37 J K−1 mol−1
Std enthalpy of; formation (ΔfH⦵298)	63.0–69.2 kJ mol−1
Std enthalpy of; combustion (ΔcH⦵298)	−3573.5 – −3567.5 kJ mol−1
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H340, H350, H373
Precautionary statements	P201, P210, P308+P313
NFPA 704 (fire diamond)	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). verify (what is ?) Infobox references

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.