cyclopentene physicochemical properties
density 0.8±0.1 g/cm3
boiling point 44.2 ± 0.0 °c at 760 mmhg
melting point −135 °c (lit.)
molecular formula c5h8
molecular weight 68.117
flash point -44.9±10.3 °c
precise quality 68.062599
logp 2.33
appearance traits colorless liquid with a smell like gasoline
steam pressure 378.4±0.0 mmhg at 25°c
refractive index 1.465
storage conditions
storage precautions store in a cool, ventilated warehouse. keep away from fire and heat. the temperature should not exceed 29 °c. the package is sealed and must not be in contact with air. should be kept away from oxidizer, do not store together. not suitable for large storage or long-term storage. explosion-proof lighting and ventilation facilities are used. it is forbidden to use mechanical equipment and tools that are prone to sparks. the storage area should be equipped with leakage emergency treatment equipment and suitable containment materials.
stability
1. stable stability
2. incompatible materials strong oxidizing agents, acids, halogenated hydrocarbons, halogens, etc.
3. conditions to avoid contact, heat, contact with air
4. polymerization hazard polymerization
water solubility immiscible
molecular structure
1, molar refractive index: 22.66
2, molar volume (cm3 / mol): 82.0
3, isotonic capacity (90.2k): 191.5
4, surface tension (dyne / cm): 29.7
5. polarization rate (10-24cm3): 8.98
computing chemistry
1. hydrophobic parameter calculation reference value (xlogp): 1.9
2. number of hydrogen bond donors: 0
3. number of hydrogen bond acceptors: 0
4. number of rotatable chemical bonds: 0
5. number of tautomers: none
6. topological molecular polarity surface area 0
7. number of heavy atoms: 5
8. surface charge: 0
9. complexity: 38
10. number of isotope atoms: 0
11. determine the number of atomic stereocenters: 0
12. uncertainty of the number of atomic stereocenters: 0
13. determine the number of chemical bond stereocenters: 0
14. uncertain chemical bond number of stereocenters: 0
15. number of covalent bond units: 1
more
1. traits: colorless liquid
2. melting point (°c): -135
3. boiling point (°c): 44.2
4. relative density (water = 1): 0.774
5. relative vapor density (air = 1): 2.35
6. saturated vapor pressure (kpa): 42.1 (20 ° c)
7. critical temperature (°c): 233
8. critical pressure (mpa): 4.79
9. octanol / water partition coefficient: 2.47
10. flash point (°c): -29
11. ignition temperature (°c): 395
12. upper explosion limit (%): 12.1
13. lower explosion limit (%): 1.5
14. solubility: insoluble in water, soluble in most organic solvents such as ethanol, ether and benzene.
15. critical density (g·cm-3): 0.274
16. critical volume (cm3·mol-1): 248
17. critical compression factor: 0.284
18. eccentricity factor: 0.195
19.lennard-jones parameters (a): 8.895
20.lennard-jones parameters (k): 195.1
21. solubility parameter (j·cm-3) 0.5: 17.156
22.van der waals area (cm2·mol-1): 6.050×109
23.van der waals volume (cm3·mol-1): 46.810
24. gas phase standard combustion heat (焓) (kj·mol-1): -3144.8
25. the gas phase standard claims heat (焓) (kj·mol-1): 33.9
26. gas phase standard entropy (j·mol-1·k-1): 291.38
27. gas phase standard generation free energy (kj·mol-1): 111.4
28. gas phase standard hot melt (j·mol-1·k-1): 81.28
29. liquid standard combustion heat (焓) (kj·mol-1): -3115.3
30. liquid phase standard claims heat (焓) (kj·mol-1): 4.4
31. liquid standard derivation (j·mol-1·k-1): 2101.25
32. liquid phase standard generation free energy (kj·mol-1): 180.62
33. liquid standard hot melt (j·mol-1·k-1): 122.38