Chemical Properties of Butane, 2-methyl- (CAS 78-78-4)

InChI

InChI=1S/C5H12/c1-4-5(2)3/h5H,4H2,1-3H3

InChI Key

QWTDNUCVQCZILF-UHFFFAOYSA-N

Formula

C5H12

SMILES

CCC(C)C

Molecular Weight¹

72.15

CAS

78-78-4

Other Names

• 1,1,2-Trimethylethane
• 1,1-Dimethylpropane
• 2-methylbutane
• Ethyldimethylmethane
• Exxsol isopentane S
• Isoamylhydride
• Methylbutane
• NSC 119476
• iso-C5H12
• iso-Pentane
• isopentane

• ω : Acentric Factor.
• Δ_cH°_gas : Standard gas enthalpy of combustion (kJ/mol).
• 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).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• P_c : Critical Pressure (kPa).
• P_vap : Vapor pressure (kPa).
• n₀ : Refractive Index.
• ρ_c : Critical density (kg/m³).
• ρ_l : Liquid Density (kg/m³).
• I_np : Non-polar retention indices.
• I : Polar retention indices.
• Δ_fusS : Entropy of fusion at a given temperature (J/mol×K).
• S°_liquid : Liquid phase molar entropy at standard conditions (J/mol×K).
• Δ_vapS : Entropy of vaporization at a given temperature (J/mol×K).
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• λ : Gas thermal conductivity (W/m×K).
• T_fus : Normal melting (fusion) point (K).
• T_triple : Triple Point Temperature (K).
• V_c : Critical Volume (m³/kmol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Contents

1. Physical Properties
2. Temperature Dependent Properties
3. Datasets
4. Correlations
5. Similar Compounds
6. Mixtures
7. Sources

Physical Properties

Property	Value	Unit	Source
ω	0.2416		Relay (1.0) Calculated Property
ΔcH°gas	[-3528.60; -3527.60]	kJ/mol
ΔcH°gas	-3528.40 ± 0.92	kJ/mol	NIST
ΔcH°gas	-3528.60 ± 0.63	kJ/mol	NIST
ΔcH°gas	-3527.60 ± 3.50	kJ/mol	NIST
ΔcH°liquid	[-3504.40; -3503.30]	kJ/mol
ΔcH°liquid	-3504.40 ± 0.84	kJ/mol	NIST
ΔcH°liquid	-3503.30 ± 0.75	kJ/mol	NIST
ΔfG°	-11.22	kJ/mol	Joback Calculated Property
ΔfH°gas	[-154.50; -153.70]	kJ/mol
ΔfH°gas	-153.70 ± 0.59	kJ/mol	NIST
ΔfH°gas	-154.10 ± 0.96	kJ/mol	NIST
ΔfH°gas	-154.50 ± 0.84	kJ/mol	NIST
ΔfH°liquid	[-179.30; -178.20]	kJ/mol
ΔfH°liquid	-178.20 ± 0.88	kJ/mol	NIST
ΔfH°liquid	-179.30 ± 0.84	kJ/mol	NIST
ΔfusH°	5.18	kJ/mol	Joback Calculated Property
ΔvapH°	[24.80; 25.22]	kJ/mol
ΔvapH°	25.22	kJ/mol	NIST
ΔvapH°	24.80	kJ/mol	NIST
ΔvapH°	24.80 ± 0.10	kJ/mol	NIST
ΔvapH°	25.00	kJ/mol	NIST
ΔvapH°	25.00	kJ/mol	NIST
IE	[10.18; 11.00]	eV
IE	10.32 ± 0.05	eV	NIST
IE	10.21	eV	NIST
IE	10.18	eV	NIST
IE	10.22	eV	NIST
IE	10.30 ± 0.10	eV	NIST
IE	10.50 ± 0.05	eV	NIST
IE	10.32	eV	NIST
IE	10.32	eV	NIST
IE	10.94	eV	NIST
IE	Outlier 11.00 ± 0.10	eV	NIST
log10WS	[-3.18; -3.18]
log10WS	-3.18		Aq. Solubility Prediction
log10WS	-3.18		Estimated Solubility
logPoct/wat	2.052		Crippen Calculated Property
McVol	81.310	ml/mol	McGowan Calculated Property
Pc	[3270.00; 3410.60]	kPa
Pc	3380.00 ± 50.00	kPa	NIST
Pc	3381.00 ± 50.66	kPa	NIST
Pc	3410.60 ± 10.13	kPa	NIST
Pc	3335.50 ± 66.70	kPa	NIST
Pc	3270.00 ± 98.07	kPa	NIST
ρc	[234.27; 235.93]	kg/m3
ρc	235.93 ± 3.61	kg/m3	NIST
ρc	234.27 ± 4.33	kg/m3	NIST
ρc	235.93 ± 2.16	kg/m3	NIST
ρc	235.93 ± 7.21	kg/m3	NIST
ρc	234.27 ± 4.33	kg/m3	NIST
Inp	[461.00; 480.00]
Inp	475.00		NIST
Inp	474.20		NIST
Inp	469.00		NIST
Inp	470.00		NIST
Inp	470.00		NIST
Inp	475.80		NIST
Inp	475.40		NIST
Inp	474.90		NIST
Inp	468.00		NIST
Inp	474.90		NIST
Inp	474.50		NIST
Inp	475.40		NIST
Inp	475.00		NIST
Inp	475.00		NIST
Inp	475.60		NIST
Inp	475.00		NIST
Inp	476.00		NIST
Inp	474.37		NIST
Inp	470.00		NIST
Inp	470.00		NIST
Inp	471.00		NIST
Inp	471.00		NIST
Inp	472.00		NIST
Inp	477.00		NIST
Inp	476.00		NIST
Inp	474.00		NIST
Inp	475.00		NIST
Inp	476.00		NIST
Inp	476.00		NIST
Inp	474.00		NIST
Inp	474.00		NIST
Inp	474.00		NIST
Inp	474.00		NIST
Inp	474.00		NIST
Inp	478.00		NIST
Inp	477.00		NIST
Inp	474.00		NIST
Inp	474.00		NIST
Inp	475.00		NIST
Inp	473.00		NIST
Inp	475.00		NIST
Inp	474.00		NIST
Inp	476.00		NIST
Inp	476.00		NIST
Inp	465.00		NIST
Inp	Outlier 461.00		NIST
Inp	477.50		NIST
Inp	477.00		NIST
Inp	464.90		NIST
Inp	466.10		NIST
Inp	465.35		NIST
Inp	465.39		NIST
Inp	467.00		NIST
Inp	465.11		NIST
Inp	465.18		NIST
Inp	465.00		NIST
Inp	466.00		NIST
Inp	474.00		NIST
Inp	475.00		NIST
Inp	474.00		NIST
Inp	475.00		NIST
Inp	475.00		NIST
Inp	475.00		NIST
Inp	476.00		NIST
Inp	480.00		NIST
Inp	474.00		NIST
Inp	465.00		NIST
Inp	466.20		NIST
Inp	Outlier 464.00		NIST
Inp	Outlier 464.00		NIST
Inp	475.00		NIST
Inp	476.00		NIST
Inp	475.00		NIST
Inp	475.00		NIST
Inp	475.00		NIST
Inp	475.00		NIST
Inp	477.00		NIST
Inp	466.00		NIST
Inp	472.00		NIST
Inp	474.00		NIST
Inp	467.00		NIST
Inp	476.00		NIST
Inp	476.00		NIST
Inp	476.00		NIST
Inp	476.00		NIST
Inp	475.00		NIST
Inp	467.00		NIST
Inp	465.00		NIST
Inp	475.80		NIST
Inp	474.50		NIST
Inp	471.00		NIST
Inp	474.00		NIST
Inp	477.00		NIST
Inp	477.50		NIST
I	[467.00; 471.00]
I	467.00		NIST
I	471.00		NIST
I	467.00		NIST
S°liquid	[254.40; 261.04]	J/mol×K
S°liquid	260.41	J/mol×K	NIST
S°liquid	261.04	J/mol×K	NIST
S°liquid	254.40	J/mol×K	NIST
Tboil	[300.00; 303.70]	K
Tboil	301.15	K	Isobaric vapor-liquid equilibrium for four binary systems of thiophene
Tboil	301.15	K	Isobaric vapor-liquid equilibrium for four binary systems of 3-methylthiophene
Tboil	Outlier 303.20	K	NIST
Tboil	301.00	K	NIST
Tboil	301.00	K	NIST
Tboil	301.20 ± 1.50	K	NIST
Tboil	302.10 ± 3.00	K	NIST
Tboil	300.20 ± 0.60	K	NIST
Tboil	300.00 ± 4.00	K	NIST
Tboil	301.00 ± 0.20	K	NIST
Tboil	301.05 ± 0.50	K	NIST
Tboil	300.90 ± 1.00	K	NIST
Tboil	301.10 ± 0.10	K	NIST
Tboil	301.15 ± 1.00	K	NIST
Tboil	301.05 ± 0.50	K	NIST
Tboil	300.86 ± 0.50	K	NIST
Tboil	301.10 ± 0.07	K	NIST
Tboil	301.10 ± 0.07	K	NIST
Tboil	301.05 ± 0.70	K	NIST
Tboil	301.05 ± 0.50	K	NIST
Tboil	300.95 ± 0.70	K	NIST
Tboil	301.10 ± 0.07	K	NIST
Tboil	301.00 ± 0.70	K	NIST
Tboil	301.05 ± 0.70	K	NIST
Tboil	301.10 ± 0.20	K	NIST
Tboil	301.15 ± 0.50	K	NIST
Tboil	301.04 ± 0.06	K	NIST
Tboil	300.95 ± 0.50	K	NIST
Tboil	301.05 ± 0.30	K	NIST
Tboil	301.10 ± 0.10	K	NIST
Tboil	301.00 ± 0.02	K	NIST
Tboil	301.10 ± 0.07	K	NIST
Tboil	301.10 ± 0.30	K	NIST
Tboil	301.10 ± 0.07	K	NIST
Tboil	300.15 ± 2.00	K	NIST
Tboil	301.10 ± 0.10	K	NIST
Tboil	301.60 ± 0.60	K	NIST
Tboil	301.25 ± 0.70	K	NIST
Tboil	301.15 ± 1.00	K	NIST
Tboil	301.10 ± 0.10	K	NIST
Tboil	301.00 ± 0.02	K	NIST
Tboil	301.07 ± 0.05	K	NIST
Tboil	301.15 ± 0.50	K	NIST
Tboil	301.00 ± 0.30	K	NIST
Tboil	300.85 ± 0.50	K	NIST
Tboil	301.05 ± 0.40	K	NIST
Tboil	300.90 ± 0.30	K	NIST
Tboil	301.04 ± 0.10	K	NIST
Tboil	301.15 ± 0.50	K	NIST
Tboil	300.90 ± 0.80	K	NIST
Tboil	301.10 ± 0.50	K	NIST
Tboil	300.95 ± 0.30	K	NIST
Tboil	300.95 ± 0.30	K	NIST
Tboil	301.15 ± 1.00	K	NIST
Tboil	301.25 ± 0.50	K	NIST
Tboil	301.25 ± 0.50	K	NIST
Tboil	301.10 ± 0.50	K	NIST
Tboil	301.05 ± 0.50	K	NIST
Tboil	301.15 ± 0.50	K	NIST
Tboil	301.10 ± 0.20	K	NIST
Tboil	301.10 ± 0.50	K	NIST
Tboil	301.15 ± 0.50	K	NIST
Tboil	301.15 ± 0.50	K	NIST
Tboil	301.10 ± 0.05	K	NIST
Tboil	Outlier 303.70 ± 1.00	K	NIST
Tboil	301.10 ± 0.03	K	NIST
Tboil	301.20 ± 0.20	K	NIST
Tboil	301.05 ± 0.50	K	NIST
Tboil	301.05 ± 0.04	K	NIST
Tboil	301.15 ± 1.00	K	NIST
Tboil	301.00 ± 2.00	K	NIST
Tboil	301.15 ± 1.00	K	NIST
Tboil	Outlier 303.55 ± 0.50	K	NIST
Tboil	301.10 ± 0.05	K	NIST
Tboil	301.10 ± 0.20	K	NIST
Tboil	301.10 ± 0.20	K	NIST
Tboil	301.15 ± 1.00	K	NIST
Tboil	Outlier 303.65 ± 2.00	K	NIST
Tc	[460.30; 468.00]	K
Tc	460.40 ± 0.50	K	NIST
Tc	460.36 ± 0.20	K	NIST
Tc	460.40	K	NIST
Tc	460.39 ± 0.50	K	NIST
Tc	460.39 ± 0.20	K	NIST
Tc	460.95 ± 0.10	K	NIST
Tc	461.00 ± 0.80	K	NIST
Tc	460.30 ± 0.60	K	NIST
Tc	Outlier 468.00 ± 8.00	K	NIST
Tfus	[112.55; 115.10]	K
Tfus	113.23	K	Aq. Solubility Prediction
Tfus	113.25 ± 0.15	K	NIST
Tfus	113.14 ± 0.01	K	NIST
Tfus	113.20 ± 0.10	K	NIST
Tfus	112.55 ± 0.30	K	NIST
Tfus	112.55 ± 0.20	K	NIST
Tfus	114.15 ± 2.00	K	NIST
Tfus	113.00 ± 1.50	K	NIST
Tfus	112.70 ± 1.00	K	NIST
Tfus	113.15 ± 0.20	K	NIST
Tfus	Outlier 115.10 ± 0.20	K	NIST
Ttriple	[112.60; 113.39]	K
Ttriple	113.37 ± 0.02	K	NIST
Ttriple	113.39 ± 0.05	K	NIST
Ttriple	112.60 ± 0.30	K	NIST
Ttriple	113.37 ± 0.02	K	NIST
Ttriple	113.39 ± 0.05	K	NIST
Ttriple	112.60 ± 0.30	K	NIST
Vc	0.306	m3/kmol	NIST

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[125.31; 179.62]	J/mol×K	[317.20; 487.05]
Cp,gas	125.31 ± 0.37	J/mol×K	317.20	NIST
Cp,gas	139.12 ± 0.42	J/mol×K	358.15	NIST
Cp,gas	153.64 ± 0.46	J/mol×K	402.30	NIST
Cp,gas	168.36 ± 0.51	J/mol×K	449.20	NIST
Cp,gas	179.62 ± 0.54	J/mol×K	487.05	NIST
Cp,liquid	[124.20; 169.41]	J/mol×K	[120.00; 300.00]
Cp,liquid	124.20	J/mol×K	120.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	125.90	J/mol×K	130.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	127.60	J/mol×K	140.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	129.20	J/mol×K	150.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	130.80	J/mol×K	160.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	132.50	J/mol×K	170.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	134.20	J/mol×K	180.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	136.00	J/mol×K	190.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	138.00	J/mol×K	200.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	140.10	J/mol×K	210.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	142.40	J/mol×K	220.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	144.80	J/mol×K	230.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	147.50	J/mol×K	240.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	150.20	J/mol×K	250.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	153.10	J/mol×K	260.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	156.20	J/mol×K	270.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	157.20	J/mol×K	273.15	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	157.30	J/mol×K	275.80	NIST
Cp,liquid	159.40	J/mol×K	280.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	162.60	J/mol×K	290.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	169.41	J/mol×K	290.00	NIST
Cp,liquid	165.40	J/mol×K	298.15	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
Cp,liquid	164.85	J/mol×K	298.15	NIST
Cp,liquid	164.50	J/mol×K	298.30	NIST
Cp,liquid	166.00	J/mol×K	300.00	Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD
η	[0.0001287; 0.0003893]	Pa×s	[253.15; 353.15]
η	0.0003893	Pa×s	253.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0003661	Pa×s	258.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0003439	Pa×s	263.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0003201	Pa×s	268.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0003023	Pa×s	273.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0002859	Pa×s	278.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0002703	Pa×s	283.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0002547	Pa×s	288.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0002399	Pa×s	293.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0002289	Pa×s	298.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0002144	Pa×s	303.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0002023	Pa×s	308.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001910	Pa×s	313.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001813	Pa×s	318.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001724	Pa×s	323.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001611	Pa×s	328.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001543	Pa×s	333.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001480	Pa×s	338.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001411	Pa×s	343.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001332	Pa×s	348.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
η	0.0001287	Pa×s	353.15	Saturated Liquid Viscosity of Cyclopentane and Isopentane
ΔfusH	[5.11; 5.16]	kJ/mol	[112.60; 113.40]
ΔfusH	5.11	kJ/mol	112.60	NIST
ΔfusH	5.11	kJ/mol	112.60	NIST
ΔfusH	5.16	kJ/mol	113.37	NIST
ΔfusH	5.16	kJ/mol	113.37	NIST
ΔfusH	5.13	kJ/mol	113.39	NIST
ΔfusH	5.13	kJ/mol	113.39	NIST
ΔfusH	5.13	kJ/mol	113.40	NIST
ΔfusH	5.13	kJ/mol	113.40	NIST
ΔvapH	[12.90; 30.20]	kJ/mol	[245.00; 436.00]
ΔvapH	30.20	kJ/mol	245.00	NIST
ΔvapH	28.50	kJ/mol	269.50	NIST
ΔvapH	26.90	kJ/mol	289.00	NIST
ΔvapH	24.83	kJ/mol	293.95	NIST
ΔvapH	24.83	kJ/mol	293.95	NIST
ΔvapH	26.20	kJ/mol	295.00	NIST
ΔvapH	24.69	kJ/mol	301.00	NIST
ΔvapH	24.40	kJ/mol	310.00	NIST
ΔvapH	21.50	kJ/mol	350.00	NIST
ΔvapH	25.20	kJ/mol	355.50	NIST
ΔvapH	25.20	kJ/mol	380.00	NIST
ΔvapH	18.00	kJ/mol	390.00	NIST
ΔvapH	24.80	kJ/mol	400.50	NIST
ΔvapH	12.90	kJ/mol	430.00	NIST
ΔvapH	25.30	kJ/mol	436.00	NIST
n0	1.35350		293.15	Isobaric Vapor Liquid Equilibrium for Nine Binary Systems of Cracking C5 Fraction at 250 kPa
ΔfusS	[45.23; 45.48]	J/mol×K	[112.60; 113.40]
ΔfusS	45.41	J/mol×K	112.60	NIST
ΔfusS	45.41	J/mol×K	112.60	NIST
ΔfusS	45.48	J/mol×K	113.37	NIST
ΔfusS	45.48	J/mol×K	113.37	NIST
ΔfusS	45.24	J/mol×K	113.39	NIST
ΔfusS	45.24	J/mol×K	113.39	NIST
ΔfusS	45.23	J/mol×K	113.40	NIST
ΔvapS	[84.48; 84.48]	J/mol×K	[293.95; 293.95]
ΔvapS	84.48	J/mol×K	293.95	NIST
ΔvapS	84.48	J/mol×K	293.95	NIST

Datasets

1. Mass density, kg/m3 (1)
2. Thermal conductivity, W/m/K (1)

Mass density, kg/m3

Fixed		Measured
Temperature, K - Liquid	Pressure, kPa - Liquid	Mass density, kg/m3 - Liquid
280.00	200000.00	744.07
280.00	180000.00	737.33
280.00	160000.00	729.89
280.00	140000.00	722.2
280.00	120000.00	713.77
280.00	100000.00	704.35
280.00	90000.00	699.3
280.00	80000.00	694.03
280.00	70000.00	688.43
280.00	60000.00	682.44
280.00	50000.00	675.94
280.00	40000.00	669.03
280.00	30000.00	661.46
280.00	20000.00	653.11
280.00	10000.00	643.42
280.00	5000.00	638.02
280.00	3000.00	635.86
280.00	2000.00	634.7
280.00	1000.00	633.54
300.00	200000.00	734.71
300.00	180000.00	727.5
300.00	160000.00	719.81
300.00	140000.00	711.75
300.00	120000.00	702.76
300.00	100000.00	692.98
300.00	90000.00	687.64
300.00	80000.00	682.03
300.00	70000.00	675.91
300.00	60000.00	669.45
300.00	50000.00	662.36
300.00	40000.00	654.71
300.00	30000.00	646.19
300.00	20000.00	636.61
300.00	10000.00	625.53
300.00	5000.00	619.26
300.00	3000.00	616.54
300.00	2000.00	615.18
300.00	1000.00	613.77
320.00	200000.00	725.65
320.00	180000.00	718.37
320.00	160000.00	710.26
320.00	140000.00	701.5
320.00	120000.00	691.83
320.00	100000.00	681.48
320.00	90000.00	675.83
320.00	80000.00	669.62
320.00	70000.00	662.98
320.00	60000.00	656.03
320.00	50000.00	648.39
320.00	40000.00	639.89
320.00	30000.00	630.46
320.00	20000.00	619.58
320.00	10000.00	606.77
320.00	5000.00	599.33
320.00	3000.00	596.07
320.00	2000.00	594.35
320.00	1000.00	592.72
340.00	200000.00	716.61
340.00	180000.00	708.89
340.00	160000.00	700.49
340.00	140000.00	691.52
340.00	120000.00	681.53
340.00	100000.00	670.52
340.00	90000.00	664.53
340.00	80000.00	658.05
340.00	70000.00	651.03
340.00	60000.00	643.45
340.00	50000.00	635.12
340.00	40000.00	625.82
340.00	30000.00	615.28
340.00	20000.00	602.92
340.00	10000.00	587.99
340.00	5000.00	578.97
340.00	3000.00	574.98
340.00	2000.00	572.85
340.00	1000.00	570.66
360.00	200000.00	708.18
360.00	180000.00	699.47
360.00	160000.00	691.16
360.00	140000.00	681.34
360.00	120000.00	671.11
360.00	100000.00	659.45
360.00	90000.00	652.93
360.00	80000.00	645.89
360.00	70000.00	638.43
360.00	60000.00	630.27
360.00	50000.00	621.15
360.00	40000.00	610.91
360.00	30000.00	599.16
360.00	20000.00	585.18
360.00	10000.00	567.71
360.00	5000.00	556.57
360.00	3000.00	551.5
360.00	2000.00	548.79
360.00	1000.00	545.89
380.00	200000.00	699.6
380.00	180000.00	691.12
380.00	160000.00	682.07
380.00	140000.00	672.14
380.00	120000.00	661.13
380.00	100000.00	648.74
380.00	90000.00	641.88
380.00	80000.00	634.41
380.00	70000.00	626.4
380.00	60000.00	617.61
380.00	50000.00	607.73
380.00	40000.00	596.53
380.00	30000.00	583.41
380.00	20000.00	567.43
380.00	10000.00	546.59
380.00	5000.00	532.71
380.00	3000.00	526.02
380.00	2000.00	522.38
380.00	1000.00	518.39
400.00	200000.00	691.58
400.00	180000.00	682.87
400.00	160000.00	673.54
400.00	140000.00	662.94
400.00	120000.00	651.4
400.00	100000.00	638.47
400.00	90000.00	631.33
400.00	80000.00	623.43
400.00	70000.00	614.87
400.00	60000.00	605.35
400.00	50000.00	594.58
400.00	40000.00	582.37
400.00	30000.00	567.78
400.00	20000.00	549.47
400.00	10000.00	524.35
400.00	5000.00	506.33
400.00	3000.00	497.03
400.00	2000.00	491.59
420.00	200000.00	683.74
420.00	180000.00	674.63
420.00	160000.00	664.82
420.00	140000.00	653.97
420.00	120000.00	641.97
420.00	100000.00	628.24
420.00	90000.00	620.5
420.00	80000.00	612.1
420.00	70000.00	602.84
420.00	60000.00	592.84
420.00	50000.00	581.15
420.00	40000.00	567.85
420.00	30000.00	551.51
420.00	20000.00	530.77
420.00	10000.00	500.48
420.00	5000.00	476.16
420.00	3000.00	461.88
420.00	2000.00	452.61
440.00	200000.00	676.01
440.00	180000.00	666.6
440.00	160000.00	656.44
440.00	140000.00	645.06
440.00	120000.00	632.51
440.00	100000.00	618.08
440.00	90000.00	610.1
440.00	80000.00	601.22
440.00	70000.00	591.44
440.00	60000.00	580.59
440.00	50000.00	568.08
440.00	40000.00	553.42
440.00	30000.00	535.46
440.00	20000.00	511.64
440.00	10000.00	474.4
440.00	5000.00	439.7
440.00	3000.00	412.99
298.14	177400.00	727.57
298.14	101400.00	694.83
298.14	40600.00	656.53
298.14	10200.00	627.35
323.13	196130.00	722.79
323.13	147100.00	703.2
323.13	98070.00	678.79
323.13	49030.00	645.8
368.12	196130.00	703.04
368.12	147100.00	681.34
368.12	98070.00	653.72
320.00	2000.00	595.25
320.00	1000.00	593.5
320.00	502.00	592.61
320.00	315.00	592.25
320.00	210.00	592.07
320.00	199.00	592.04
340.00	1000.00	571.14
340.00	513.00	570.01
340.00	420.00	569.78
340.00	338.00	569.61
360.00	1000.00	545.87
360.00	702.00	545.09
360.00	609.00	544.84
360.00	608.00	544.68
360.00	550.00	544.65
380.00	1001.00	519.03
380.00	962.00	518.87
380.00	857.00	518.44
380.00	846.00	518.39
400.00	2000.00	492.12
400.00	1611.00	489.83
400.00	1506.00	489.2
400.00	1309.00	487.97
400.00	1250.00	487.6
410.00	2000.00	474.02
410.00	1623.00	471.11
410.00	1519.00	470.27
420.00	2000.00	452.93
420.00	1904.00	451.92
420.00	1800.00	450.78
420.00	1789.00	450.66
Reference

Thermal conductivity, W/m/K

Fixed		Measured
Temperature, K - Gas	Pressure, kPa - Gas	Thermal conductivity, W/m/K - Gas
342.97	100.00	0.0195
352.61	100.00	0.0206
375.00	100.00	0.0235
390.75	100.00	0.0257
342.97	200.00	0.0196
352.61	200.00	0.0207
375.00	200.00	0.0236
390.75	200.00	0.0258
342.97	500.00	0.0198
352.61	500.00	0.0209
375.00	500.00	0.0238
390.75	500.00	0.0260
Reference

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.16e-07; 3360.92]	kPa	[113.25; 460.43]	KDB Vapor Pressure Data
Equation			ln(Y) = A + B/T + C·ln(T) + D·T² + E/T² Y is Pvap in kPa, T in K
Coefficient A			6.45140e+01
Coefficient B			-4.98703e+03
Coefficient C			-7.72933e+00
Coefficient D			8.65422e-06
Coefficient E			0.00000e+00
Temperature range, min.			113.25
Temperature range, max.			460.43
Pvap	1.16e-07	kPa	113.25	Calculated Property
Pvap	9.53e-04	kPa	151.83	Calculated Property
Pvap	0.14	kPa	190.40	Calculated Property
Pvap	3.29	kPa	228.98	Calculated Property
Pvap	26.91	kPa	267.55	Calculated Property
Pvap	120.50	kPa	306.13	Calculated Property
Pvap	370.45	kPa	344.70	Calculated Property
Pvap	892.42	kPa	383.28	Calculated Property
Pvap	1828.60	kPa	421.85	Calculated Property
Pvap	3360.92	kPa	460.43	Calculated Property
Pvap	[0.13; 100.99]	kPa	[190.30; 300.90]	NIST
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			1.36068e+01
Coefficient B			-2.34522e+03
Coefficient C			-4.00810e+01
Reference			Stull, 1947
Temperature range, min.			190.30
Temperature range, max.			300.90
Pvap	0.13	kPa	190.30	Calculated Property
Pvap	0.44	kPa	202.59	Calculated Property
Pvap	1.21	kPa	214.88	Calculated Property
Pvap	2.92	kPa	227.17	Calculated Property
Pvap	6.32	kPa	239.46	Calculated Property
Pvap	12.51	kPa	251.74	Calculated Property
Pvap	22.98	kPa	264.03	Calculated Property
Pvap	39.63	kPa	276.32	Calculated Property
Pvap	64.74	kPa	288.61	Calculated Property
Pvap	100.99	kPa	300.90	Calculated Property
Pvap	[101.40; 3027.70]	kPa	[300.90; 453.50]	NIST
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			1.37506e+01
Coefficient B			-2.35293e+03
Coefficient C			-4.32310e+01
Reference			Stull, 1947
Temperature range, min.			300.90
Temperature range, max.			453.50
Pvap	101.40	kPa	300.90	Calculated Property
Pvap	178.19	kPa	317.86	Calculated Property
Pvap	293.26	kPa	334.81	Calculated Property
Pvap	456.93	kPa	351.77	Calculated Property
Pvap	679.80	kPa	368.72	Calculated Property
Pvap	972.35	kPa	385.68	Calculated Property
Pvap	1344.62	kPa	402.63	Calculated Property
Pvap	1805.89	kPa	419.59	Calculated Property
Pvap	2364.50	kPa	436.54	Calculated Property
Pvap	3027.70	kPa	453.50	Calculated Property
Pvap	[66.76; 103.93]	kPa	[289.44; 301.74]	NIST
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			1.36188e+01
Coefficient B			-2.34866e+03
Coefficient C			-4.00530e+01
Reference			Williamham, Taylor, et al., 1945
Temperature range, min.			289.44
Temperature range, max.			301.74
Pvap	66.76	kPa	289.44	Calculated Property
Pvap	70.27	kPa	290.81	Calculated Property
Pvap	73.93	kPa	292.17	Calculated Property
Pvap	77.74	kPa	293.54	Calculated Property
Pvap	81.70	kPa	294.91	Calculated Property
Pvap	85.82	kPa	296.27	Calculated Property
Pvap	90.09	kPa	297.64	Calculated Property
Pvap	94.54	kPa	299.01	Calculated Property
Pvap	99.15	kPa	300.37	Calculated Property
Pvap	103.93	kPa	301.74	Calculated Property

Similar Compounds

Find more compounds similar to Butane, 2-methyl-.

Mixtures

• Pentane + Butane, 2-methyl-
• Thiophene + Butane, 2-methyl-
• Thiophene, 3-methyl- + Butane, 2-methyl-
• Butane, 2-methyl- + Water
• Carbon dioxide + Butane, 2-methyl-
• 2-Propanol, 2-methyl- + Butane, 2-methyl- + Water
• 2-Butene, 2-methyl- + Butane, 2-methyl-
• Cyclopentene + Butane, 2-methyl-

Sources

• KDB Vapor Pressure Data
• Cheméo Relay (1.0)
• Crippen Method
• The Precise Measurement of Vapor Liquid Equilibrium Properties of the CO2/Isopentane Binary Mixture, and Fitted Parameters for a Helmholtz Energy Mixture Model
• Thermal conductivity of polyurethane foam cell gases: Improved transient hot wire cell data of isopentane + n-pentane mixtures Extended Wassiljewa-model
• Isobaric vapor-liquid equilibrium for four binary systems of thiophene
• Isobaric vapor-liquid equilibrium for four binary systems of 3-methylthiophene
• Development of a Henry s constant correlation and solubility measurements of n-pentane, i-pentane, cyclopentane, n-hexane, and toluene in water
• P.rho.T and saturation properties of isopentane at T = (280-440) K and up to 200 MPa
• Isobaric Vapor Liquid Equilibrium for Nine Binary Systems of Cracking C5 Fraction at 250 kPa
• Saturated Liquid Viscosity of Cyclopentane and Isopentane
• Liquid-Liquid Equilibria in Ternary Systems 2-Methylbutane + 2-Methyl-2-propanol + Water and Pentane + 2-Methyl-2-propanol + Water at 293.15 K
• Joback Method
• KDB
• Aqueous Solubility Prediction Method
• Estimated Solubility Method
• McGowan Method
• NIST Webbook
• Zabransky, M., Ruzicka, V., Majer, V. and Domalski, E. (1997), Heat Capacity of Liquids: Critical Review and Recommended Values - Monograph No. 6, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD

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