1,3-Cycloheptadiene

Chemical compound From Wikipedia, the free encyclopedia

1,3-Cycloheptadiene is a highly flammable cycloalkene that occurs as a colorless clear liquid.

Quick facts Names, Identifiers ...
1,3-Cycloheptadiene
ball-and-stick structure, cis-cis isomer
ball-and-stick structure, cis-cis isomer
Names
Preferred IUPAC name
Cyclohepta-1,3-diene
Other names
1,3-Cycloheptadiene
Identifiers
3D model (JSmol)
Abbreviations 1,3-CHDN
1900733
ChemSpider
ECHA InfoCard 100.021.603 Edit this at Wikidata
EC Number
  • 223-762-8
1656
MeSH 1,3-cycloheptadiene
UNII
UN number 3295
  • InChI=1S/C7H10/c1-2-4-6-7-5-3-1/h1-4H,5-7H2
    Key: GWYPDXLJACEENP-UHFFFAOYSA-N
  • C1CC=CC=CC1
Properties
C7H10
Molar mass 94.157 g·mol−1
Appearance Colorless liquid
Density 0.868 g cm−3
Melting point −110.40 Â°C; −166.72 Â°F; 162.75 K
Boiling point 120.6 Â°C; 249.0 Â°F; 393.7 K
1.498
Thermochemistry
J K−1 mol−1
Std molar
entropy (S⦵298)
 J K−1 mol−1
Std enthalpy of
formation (ΔfH⦵298)
 kJ mol−1
Std enthalpy of
combustion (ΔcH⦵298)
 - kJ mol−1
Hazards
GHS labelling:
GHS02: FlammableGHS08: 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 11 Â°C (52 Â°F; 284 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 Â°C [77 Â°F], 100 kPa).
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Reactions

Over a heated Pt(111) surface, 1,3-cycloheptadiene binds to the platinum, loses hydrogen to form a cycloheptatriene, and when strongly heated forms a layer of carbon.[1]

References

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