Chemical Properties of Cyclopentane, ethylidene-

InChI

InChI=1S/C7H12/c1-2-7-5-3-4-6-7/h2H,3-6H2,1H3

InChI Key

VONKRKBGTZDZNV-UHFFFAOYSA-N

Formula

C7H12

SMILES

CC=C1CCCC1

Molecular Weight¹

96.17

Other Names

• Ethylidenecyclopentane

• Δ_cH°_liquid : Standard liquid enthalpy of combustion (kJ/mol).
• C_p,gas : Ideal gas heat capacity (J/mol×K).
• C_p,liquid : Liquid phase heat capacity (J/mol×K).
• η : Dynamic viscosity (Pa×s).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fH°_liquid : Liquid phase enthalpy of formation at standard conditions (kJ/mol).
• Δ_fusH° : Enthalpy of fusion at standard conditions (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• IE : Ionization energy (eV).
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• I_np : Non-polar retention indices.
• T_boil : Normal Boiling Point Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ΔcH°liquid	-4412.82 ± 0.79	kJ/mol	NIST
ΔfH°gas	-20.00	kJ/mol	NIST
ΔfH°liquid	-56.82 ± 0.88	kJ/mol	NIST
ΔfusH°	7.07	kJ/mol	Joback Calculated Property
ΔvapH°	38.60 ± 0.30	kJ/mol	NIST
IE	[8.49; 8.51]	eV
IE	8.51	eV	NIST
IE	8.49 ± 0.02	eV	NIST
logPoct/wat	2.507		Crippen Calculated Property
McVol	94.330	ml/mol	McGowan Calculated Property
Inp	[763.00; 776.00]
Inp	766.90		NIST
Inp	770.30		NIST
Inp	776.00		NIST
Inp	772.00		NIST
Inp	763.00		NIST
Inp	768.00		NIST
Inp	771.00		NIST
Inp	774.00		NIST
Inp	772.00		NIST
Tboil	[353.41; 388.00]	K
Tboil	385.20 ± 3.00	K	NIST
Tboil	384.00 ± 1.50	K	NIST
Tboil	385.03 ± 0.30	K	NIST
Tboil	385.20 ± 1.00	K	NIST
Tboil	385.03 ± 0.30	K	NIST
Tboil	385.03 ± 0.40	K	NIST
Tboil	385.80 ± 1.00	K	NIST
Tboil	Outlier 353.41 ± 0.20	K	NIST
Tboil	388.00 ± 6.00	K	NIST
Tfus	[143.40; 146.57]	K
Tfus	143.40	K	Jean-Claude Bradley Open Melting Point Dataset (2014, CC0) Compiled value
Tfus	146.57 ± 0.02	K	NIST
Tfus	146.55 ± 0.05	K	NIST
Tfus	146.57 ± 0.02	K	NIST

Cheméo can also estimate Critical Temperature, Critical Pressure, Critical Volume, Standard Gibbs free energy of formation, Acentric Factor, Log10 of Water solubility in mol/l for this compound, but they fall outside the models' validated range, so they are not shown here. Open the prediction tool to compute them on demand.

Temperature Dependent Properties

Correlations

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[110.80; 323.12]	J/mol×K	[273.00; 1000.00]	Joback Predicted correlation
Equation			Y = A + B·T + C·T² + D·T³ + E·T⁴ Y is Cp,gas in J/mol×K, T in K
Coefficient A			-5.88000e+01
Coefficient B			7.49520e-01
Coefficient C			-5.08300e-04
Coefficient D			1.40700e-07
Coefficient E			0.00000e+00
Temperature range, min.			273.00
Temperature range, max.			1000.00
Cp,gas	110.80	J/mol×K	273.00	Calculated Property
Cp,gas	148.98	J/mol×K	353.78	Calculated Property
Cp,gas	182.47	J/mol×K	434.56	Calculated Property
Cp,gas	211.72	J/mol×K	515.33	Calculated Property
Cp,gas	237.18	J/mol×K	596.11	Calculated Property
Cp,gas	259.29	J/mol×K	676.89	Calculated Property
Cp,gas	278.49	J/mol×K	757.67	Calculated Property
Cp,gas	295.23	J/mol×K	838.44	Calculated Property
Cp,gas	309.96	J/mol×K	919.22	Calculated Property
Cp,gas	323.12	J/mol×K	1000.00	Calculated Property

Property	Value	Unit	Temperature (K)	Source
η	[0.0202554; 0.0002226]	Pa×s	[145.77; 412.36]	Joback Predicted correlation
Equation			Y = exp(A + B/T + C·ln(T) + D·T^E) Y is η in Pa×s, T in K
Coefficient A			-1.08769e+01
Coefficient B			1.01713e+03
Coefficient C			0.00000e+00
Coefficient D			0.00000e+00
Coefficient E			0.00000e+00
Comment			Liquid phase. Joback/Reid (1987), valid from Tf to 0.7·Tc.
Temperature range, min.			145.77
Temperature range, max.			412.36
η	0.0202554	Pa×s	145.77	Calculated Property
η	0.0062341	Pa×s	175.39	Calculated Property
η	0.0026971	Pa×s	205.01	Calculated Property
η	0.0014417	Pa×s	234.64	Calculated Property
η	0.0008869	Pa×s	264.26	Calculated Property
η	0.0006017	Pa×s	293.88	Calculated Property
η	0.0004383	Pa×s	323.50	Calculated Property
η	0.0003367	Pa×s	353.12	Calculated Property
η	0.0002694	Pa×s	382.74	Calculated Property
η	0.0002226	Pa×s	412.36	Calculated Property

Similar Compounds

Find more compounds similar to Cyclopentane, ethylidene-.

Sources

• Jean-Claude Bradley Open Melting Point Dataset (2014, CC0) ChEDL chemicals 1.5.2, from Bradley, J.-C.; Williams, A.; Lang, A. Jean-Claude Bradley Open Melting Point Dataset. Figshare, 2014 (CC0).
• Cheméo Relay (1.0, beta) Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
• Crippen Method
• Crippen Method
• Joback Method
• McGowan Method
• NIST Webbook

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