Introduction to Cyclopentane

Introduction to Cyclopentane
Cyclopentane (molecular formula: c5h10) is a five carbon naphthenic hydrocarbon. It is colorless, clear and highly flammable liquid at room temperature, with smell similar to gasoline. It is insoluble in water, but soluble in most organic solvents such as benzene, alcohol, ether and carbon tetrachloride. Melting point – 94 ° C, boiling point 49 ° C.

• Overview 2902199090 other cycloalkanes, cycloalkenes and cycloterpenes. Regulatory conditions: none. VAT rate: 17.0%. Tax rebate rate: 9.0%. MFN tariff: 2.0%. General tariff: 30.0%
• Summary2902199090 other cyclanes, cyclenes and cyclotherpenes。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

Cyclopentane

Essential Information
Cyclopentane
English Name: cyclopentane
Alias: glycine hydrochloride aminoacetyl hydrochloride
More names: glycinamide monohydrochloride
CAS No.: 287-92-3
Molecular formula: c5h10
Molecular weight: 70.1329
SMILES：C1CCCC1

Physical Property Data
1. Properties: colorless transparent liquid with benzene like smell. [1]
2. Melting point (℃): – 94 [2]
3. Boiling point (℃): 49.2 [3]
4. Relative density (water = 1): 0.75 [4]
5. Relative vapor density (air = 1): 2.42 [5]
6. Saturated vapor pressure (kPa): 45 (20 ℃) [6]
7. Heat of combustion (kJ / mol): – 3287.8 [7]
8. Critical temperature (℃): 238.6 [8]
9. Critical pressure (MPA): 4.52 [9]
10. Octanol / water partition coefficient: 3.0 [10]
11. Flash point (℃): – 37 (CC) [11]
12. Ignition temperature (℃): 361 [12]
13. Upper explosion limit (%): 8.7 [13]
14. Lower explosive limit (%): 1.1 [14]
15. Solubility: insoluble in water, soluble in ethanol, ether, benzene, carbon tetrachloride, acetone and other organic solvents. [15]
16. Critical density (g · cm-3): 0.270
17. Critical volume (cm3 · mol-1): 259
18. Critical compression factor: 0.275
19. Eccentricity factor: 0.194
20. Lennard Jones parameter (a): 6.2425
21. Lennard Jones parameter (k): 195.95
22. Solubility parameter (J · cm-3) 0.5:16.682
23. Van der Waals area (cm2 · mol ⁻ ¹）： six point seven five zero × one hundred and nine
24. Van der Waals volume (cm3 · mol-1): 49.690
25. Standard combustion heat (enthalpy) of gas phase (kJ · mol-1): -3319.75
26. Standard declared heat (enthalpy) of gas phase (kJ · mol-1): – 77.1
27. Standard entropy of gas phase (J · mol-1 · k-1): 292.86
28. Standard free energy of formation in gas phase (kJ · mol-1): 39.0
29. Gas phase standard hot melt (J · mol-1 · k-1): 18.76
30. Standard combustion heat (enthalpy) of liquid phase (kJ · mol-1): -3290.89
31. Standard declared heat (enthalpy) of liquid phase (kJ · mol-1): – 105.8
32. Standard entropy of liquid phase (J · mol-1 · k-1): 204.26
33. Standard free energy of formation in liquid phase (kJ · mol-1): 36.5
34. Liquid phase standard hot melt (J · mol-1 · k-1): 126.87

Storage Method
Storage precautions [24] store in a cool and ventilated warehouse. Keep away from fire and heat source. The storage temperature should not exceed 29 ℃. Keep the container sealed. It shall be stored separately from oxidant and shall not be mixed. Explosion proof lighting and ventilation facilities shall be adopted. It is forbidden to use mechanical equipment and tools that are easy to produce sparks. The storage area shall be equipped with leakage emergency treatment equipment and appropriate receiving materials.

Synthetic Method
It can be prepared by hydrogenation of cyclopentadiene produced by coal carbonization.

Main Uses
It is used to replace freon, widely used in fridge, freezer and other rigid PU foam.

System Number
CAS No.: 287-92-3
MDL No.: mfcd00001356
EINECS No.: 206-016-6
RTECS No.: gy239000
BRN No.: 1900195
PubChem No.: 24857286

Molecular Structure Data
1. Molar refractive index: 23.05
2. Molar volume (m3 / mol): 88.7
3. Isotonic specific volume (90.2k): 200.2
4. Surface tension (dyne / cm): 25.9
5. Dielectric constant (F / M): not available
6. Even distance (d): not available
7. Polarizability (10-24cm3): 9.14

Computational chemistry data
1. Reference value for hydrophobic parameter calculation (xlogp): 3
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond receptors: 0
4. Number of rotatable chemical bonds: 0
5. Number of tautomers: None
6. Topological molecular polar surface area (TPSA): 0
7. Number of heavy atoms: 5
8. Surface charge: 0
9. Complexity: 11.6
10. Number of isotopic atoms: 0
11. Determine the number of atomic stereocenters: 0
12. Number of uncertain atomic stereocenters: 0
13. Determine the number of chemical bond stereocenters: 0
14. Number of indeterminate chemical bond stereocenters: 0
15. Number of covalent bond units: 1

Safety Information
Packing grade: II
Hazard category: 3
Customs Code: 2902199090
Transport code of dangerous goods: un11463 / PG2
WGKGermany：1
Hazard category code: R11; R52/53
Safety instructions: s9-s16-s29-s33-s61
RTECS No.: gy239000
Dangerous goods sign: F: flammable;