Chemical Properties of Cyclopentane, ethyl- (CAS 1640-89-7)

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InChI

InChI=1S/C7H14/c1-2-7-5-3-4-6-7/h7H,2-6H2,1H3

InChI Key

IFTRQJLVEBNKJK-UHFFFAOYSA-N

Formula

C7H14

SMILES

CCC1CCCC1

Molecular Weight¹

98.19

CAS

1640-89-7

Other Names

• Ethylcyclopentane

Sources

• Joback Method
• NIST Webbook
• Crippen Method

• 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_fG°: Standard Gibbs free energy of formation (kJ/mol).
• 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_fusH: Enthalpy of fusion at a given temperature (kJ/mol).
• Δ_vapH°: Enthalpy of vaporization at standard conditions (kJ/mol).
• Δ_vapH: Enthalpy of vaporization at a given temperature (kJ/mol).
• IE: Ionization energy (eV).
• logP_oct/wat: Octanol/Water partition coefficient.
• P_c: Critical Pressure (kPa).
• S°_gas: Molar entropy at standard conditions (J/mol×K).
• S°_liquid: Liquid phase molar entropy at standard conditions (J/mol×K).
• T_boil: Normal Boiling Point Temperature (K).
• T_c: Critical Temperature (K).
• T_fus: Normal melting (fusion) point (K).
• T_triple: Triple Point Temperature (K).
• V_c: Critical Volume (m³/kg-mol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ΔcH°liquid	-4591.94 ± 0.92	kJ/mol	NIST
ΔcH°liquid	-4589.60 ± 1.50	kJ/mol	NIST
ΔfG°	44.61	kJ/mol	Joback Calculated Property
ΔfH°gas	-127.10 ± 1.00	kJ/mol	NIST
ΔfH°gas	-129.40	kJ/mol	NIST
ΔfH°liquid	-163.50 ± 1.00	kJ/mol	NIST
ΔfH°liquid	-165.80 ± 1.60	kJ/mol	NIST
ΔfusH°	7.82	kJ/mol	Joback Calculated Property
ΔvapH°	36.47	kJ/mol	NIST
ΔvapH°	36.50	kJ/mol	NIST
ΔvapH°	36.40	kJ/mol	NIST
IE	9.60	eV	NIST
IE	10.12 ± 0.02	eV	NIST
logPoct/wat	2.587		Crippen Calculated Property
Pc	3400.00 ± 40.00	kPa	NIST
Pc	3397.02 ± 5.06	kPa	NIST
S°gas	378.32	J/mol×K	NIST
S°liquid	279.91	J/mol×K	NIST
Tboil	[375.65; 376.90]	K
Tboil	376.70	K	NIST
Tboil	376.60	K	NIST
Tboil	376.59 ± 0.10	K	NIST
Tboil	Outlier 375.65 ± 1.50	K	NIST
Tboil	376.60 ± 0.30	K	NIST
Tboil	376.60 ± 0.20	K	NIST
Tboil	376.70 ± 0.80	K	NIST
Tboil	376.61 ± 0.02	K	NIST
Tboil	376.60 ± 0.15	K	NIST
Tboil	376.65 ± 0.20	K	NIST
Tboil	376.60 ± 0.05	K	NIST
Tboil	376.60 ± 0.20	K	NIST
Tboil	376.57 ± 0.30	K	NIST
Tboil	376.61 ± 0.30	K	NIST
Tboil	376.57 ± 0.30	K	NIST
Tboil	376.90 ± 0.40	K	NIST
Tboil	376.57 ± 0.00	K	NIST
Tboil	376.60 ± 0.30	K	NIST
Tboil	376.70 ± 0.30	K	NIST
Tboil	376.60 ± 0.30	K	NIST
Tboil	376.55 ± 0.40	K	NIST
Tboil	376.63 ± 0.20	K	NIST
Tboil	376.65 ± 0.50	K	NIST
Tboil	376.85 ± 0.50	K	NIST
Tboil	376.75 ± 0.50	K	NIST
Tboil	376.30 ± 1.00	K	NIST
Tboil	Outlier 376.00 ± 1.00	K	NIST
Tboil	376.25 ± 1.00	K	NIST
Tc	569.50 ± 0.50	K	NIST
Tc	569.50	K	NIST
Tc	569.45 ± 0.05	K	NIST
Tfus	[133.88; 135.30]	K
Tfus	134.69 ± 0.50	K	NIST
Tfus	134.69 ± 0.50	K	NIST
Tfus	134.09 ± 0.20	K	NIST
Tfus	134.09 ± 0.20	K	NIST
Tfus	134.71 ± 0.03	K	NIST
Tfus	134.69 ± 0.06	K	NIST
Tfus	134.70 ± 0.05	K	NIST
Tfus	134.69 ± 0.05	K	NIST
Tfus	134.35 ± 0.30	K	NIST
Tfus	134.35 ± 0.30	K	NIST
Tfus	133.88 ± 0.20	K	NIST
Tfus	134.69 ± 0.05	K	NIST
Tfus	134.71 ± 0.04	K	NIST
Tfus	133.88 ± 0.20	K	NIST
Tfus	133.88 ± 0.50	K	NIST
Tfus	134.35 ± 0.20	K	NIST
Tfus	135.30 ± 0.40	K	NIST
Tfus	135.25 ± 0.40	K	NIST
Tfus	135.30 ± 0.40	K	NIST
Ttriple	[134.02; 134.73]	K
Ttriple	134.03 ± 0.07	K	NIST
Ttriple	134.73 ± 0.07	K	NIST
Ttriple	134.73 ± 0.05	K	NIST
Ttriple	134.02 ± 0.02	K	NIST
Ttriple	134.72 ± 0.02	K	NIST
Ttriple	134.02 ± 0.10	K	NIST
Ttriple	134.72 ± 0.06	K	NIST
Vc	0.375	m3/kg-mol	NIST

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	173.92	J/mol×K	374.84	Joback Calculated Property
Cp,liquid	187.61	J/mol×K	301.83	NIST
η	0.0002957	Pa×s	374.84	Joback Calculated Property
ΔfusH	6.86	kJ/mol	134.7	NIST
ΔfusH	6.87	kJ/mol	134.7	NIST
ΔvapH	[31.90; 35.70]	kJ/mol	[313.00; 534.00]
ΔvapH	35.60 ± 0.10	kJ/mol	313.0	NIST
ΔvapH	34.80 ± 0.10	kJ/mol	328.0	NIST
ΔvapH	35.70	kJ/mol	339.5	NIST
ΔvapH	33.90 ± 0.10	kJ/mol	343.0	NIST
ΔvapH	35.50	kJ/mol	347.5	NIST
ΔvapH	33.00 ± 0.10	kJ/mol	358.0	NIST
ΔvapH	32.50 ± 0.10	kJ/mol	368.0	NIST
ΔvapH	31.96	kJ/mol	376.6	NIST
ΔvapH	32.90	kJ/mol	446.5	NIST
ΔvapH	31.90	kJ/mol	534.0	NIST

Molecular Descriptors

Joback and Reid Groups
-CH2-	1
-CH3	1
>CH- (ring)	1
-CH2- (ring)	4

Similar Compounds

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