Chemical Properties of 2-Butene, 2-methyl- (CAS 513-35-9)

InChI

InChI=1S/C5H10/c1-4-5(2)3/h4H,1-3H3

InChI Key

BKOOMYPCSUNDGP-UHFFFAOYSA-N

Formula

C5H10

SMILES

CC=C(C)C

Molecular Weight¹

70.13

CAS

513-35-9

Other Names

• (CH3)2C=CHCH3
• 1,1,2-TRIMETHYLETHYLENE
• 2-Methy-2-Butene
• 2-Methyl-2-butene
• 2-Methylbut-2-ene
• 2-Methylbutene-2
• 3-METHYL-2-BUTENE
• AMYLENE
• Ethylene, trimethyl-
• NSC 74118
• Trimethylethylene
• UN 2460
• b-isoamylene
• n-Amylene
• «beta»-Isoamylene
• «beta»-Isoamylene

• ω : Acentric Factor.
• PAff : Proton affinity (kJ/mol).
• AP : Aniline Point (K).
• BasG : Gas basicity (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).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_c,grossH : Heat of Combustion, Gross form (kJ/mol).
• Δ_c,netH : Heat of Combustion, Net Form (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).
• NFPA Fire : NFPA Fire Rating.
• NFPA Health : NFPA Health Rating.
• P_c : Critical Pressure (kPa).
• P_vap : Vapor pressure (kPa).
• n₀ : Refractive Index.
• 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).
• γ : Surface Tension (N/m).
• 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/kmol).
• Z_ra : Rackett Parameter.
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ω	0.2440		KDB
PAff	808.80	kJ/mol	NIST
AP	285.950	K	KDB
BasG	779.90	kJ/mol	NIST
ΔcH°liquid	-3328.60 ± 1.30	kJ/mol	NIST
ΔfG°	59.70	kJ/mol	KDB
Δc,grossH	3326.91	kJ/mol	KDB
Δc,netH	3106.829	kJ/mol	KDB
ΔfH°gas	[-42.58; -41.00]	kJ/mol
ΔfH°gas	-42.58	kJ/mol	KDB
ΔfH°gas	-41.50 ± 0.88	kJ/mol	NIST
ΔfH°gas	-41.00	kJ/mol	NIST
ΔfH°liquid	[-68.60; -68.10]	kJ/mol
ΔfH°liquid	-68.60 ± 0.80	kJ/mol	NIST
ΔfH°liquid	-68.10 ± 1.30	kJ/mol	NIST
ΔfusH°	7.60	kJ/mol	Joback Calculated Property
ΔvapH°	[27.10; 27.34]	kJ/mol
ΔvapH°	27.34	kJ/mol	NIST
ΔvapH°	27.10	kJ/mol	NIST
ΔvapH°	27.10 ± 0.10	kJ/mol	NIST
IE	[8.67; 8.85]	eV
IE	8.69 ± 0.01	eV	NIST
IE	8.69	eV	NIST
IE	8.68 ± 0.02	eV	NIST
IE	8.68 ± 0.00	eV	NIST
IE	8.70	eV	NIST
IE	8.83 ± 0.11	eV	NIST
IE	8.72	eV	NIST
IE	Outlier 8.85 ± 0.04	eV	NIST
IE	8.67 ± 0.02	eV	NIST
IE	8.68	eV	NIST
log10WS	[-2.56; -2.56]
log10WS	-2.56		Aq. Sol...
log10WS	-2.56		Estimat...
logPoct/wat	1.973		Crippen Calculated Property
McVol	77.010	ml/mol	McGowan Calculated Property
NFPA Fire	3		KDB
NFPA Health	2		KDB
Pc	[3420.00; 3420.00]	kPa
Pc	3420.00	kPa	KDB
Pc	3420.00 ± 100.00	kPa	NIST
Inp	[498.00; 531.00]
Inp	520.20		NIST
Inp	513.80		NIST
Inp	515.00		NIST
Inp	520.10		NIST
Inp	Outlier 504.00		NIST
Inp	Outlier 504.00		NIST
Inp	520.00		NIST
Inp	519.80		NIST
Inp	520.00		NIST
Inp	519.80		NIST
Inp	514.30		NIST
Inp	514.40		NIST
Inp	523.00		NIST
Inp	519.00		NIST
Inp	519.00		NIST
Inp	520.00		NIST
Inp	520.00		NIST
Inp	520.00		NIST
Inp	514.50		NIST
Inp	519.90		NIST
Inp	520.30		NIST
Inp	514.50		NIST
Inp	514.70		NIST
Inp	514.00		NIST
Inp	520.00		NIST
Inp	520.00		NIST
Inp	520.00		NIST
Inp	519.00		NIST
Inp	514.33		NIST
Inp	514.00		NIST
Inp	514.00		NIST
Inp	526.00		NIST
Inp	514.00		NIST
Inp	514.00		NIST
Inp	513.75		NIST
Inp	514.00		NIST
Inp	507.00		NIST
Inp	514.00		NIST
Inp	514.00		NIST
Inp	515.00		NIST
Inp	515.00		NIST
Inp	515.00		NIST
Inp	515.00		NIST
Inp	522.00		NIST
Inp	514.00		NIST
Inp	526.00		NIST
Inp	527.00		NIST
Inp	525.00		NIST
Inp	523.00		NIST
Inp	515.80		NIST
Inp	518.60		NIST
Inp	520.00		NIST
Inp	513.84		NIST
Inp	514.38		NIST
Inp	514.00		NIST
Inp	520.30		NIST
Inp	519.50		NIST
Inp	520.40		NIST
Inp	514.20		NIST
Inp	Outlier 530.00		NIST
Inp	514.00		NIST
Inp	515.00		NIST
Inp	Outlier 531.00		NIST
Inp	519.00		NIST
Inp	521.00		NIST
Inp	Outlier 498.00		NIST
Inp	514.00		NIST
Inp	522.00		NIST
Inp	514.00		NIST
Inp	519.00		NIST
Inp	515.00		NIST
Inp	Outlier 502.00		NIST
Inp	515.00		NIST
Inp	521.00		NIST
Inp	514.00		NIST
Inp	515.00		NIST
Inp	522.00		NIST
Inp	517.00		NIST
Inp	520.00		NIST
Inp	520.00		NIST
Inp	523.00		NIST
Inp	524.00		NIST
Inp	517.00		NIST
Inp	517.00		NIST
Inp	517.00		NIST
Inp	514.00		NIST
Inp	525.00		NIST
I	[561.00; 614.00]
I	614.00		NIST
I	573.00		NIST
I	561.00		NIST
I	614.00		NIST
S°liquid	[248.90; 251.20]	J/mol×K
S°liquid	251.20	J/mol×K	NIST
S°liquid	251.04	J/mol×K	NIST
S°liquid	248.90	J/mol×K	NIST
Tboil	311.71	K	KDB
Tc	[470.00; 481.00]	K
Tc	470.00	K	KDB
Tc	477.47	K	Vapor P...
Tc	470.00 ± 1.00	K	NIST
Tc	481.00	K	NIST
Tfus	[127.10; 150.00]	K
Tfus	139.39	K	KDB
Tfus	139.22	K	Aq. Sol...
Tfus	139.35 ± 0.07	K	NIST
Tfus	139.35 ± 0.04	K	NIST
Tfus	139.37 ± 0.02	K	NIST
Tfus	139.12 ± 0.40	K	NIST
Tfus	140.20 ± 0.50	K	NIST
Tfus	139.00 ± 1.50	K	NIST
Tfus	139.00 ± 1.00	K	NIST
Tfus	Outlier 127.10 ± 0.70	K	NIST
Tfus	Outlier 150.00 ± 4.00	K	NIST
Tfus	146.00 ± 6.00	K	NIST
Ttriple	[138.90; 139.44]	K
Ttriple	139.40 ± 0.02	K	NIST
Ttriple	139.42 ± 0.05	K	NIST
Ttriple	139.44 ± 0.60	K	NIST
Ttriple	139.42 ± 0.60	K	NIST
Ttriple	138.90 ± 0.20	K	NIST
Vc	0.296	m3/kmol	Joback Calculated Property
Zra	0.26		KDB

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[111.00; 152.05]	J/mol×K	[319.04; 471.09]
T(K) Ideal gas heat capacity (J/mol×K) 110 120 130 140 150 350 400 450
Cp,gas	111.00 ± 0.33	J/mol×K	319.04	NIST
Cp,gas	122.97 ± 0.37	J/mol×K	362.37	NIST
Cp,gas	133.93 ± 0.40	J/mol×K	402.26	NIST
Cp,gas	143.05 ± 0.43	J/mol×K	436.18	NIST
Cp,gas	152.05 ± 0.46	J/mol×K	471.09	NIST
Cp,liquid	[146.40; 152.80]	J/mol×K	[293.90; 298.15]
Cp,liquid	146.40	J/mol×K	293.90	NIST
Cp,liquid	152.80	J/mol×K	298.15	NIST
Cp,liquid	152.80	J/mol×K	298.15	NIST
ΔfusH	[7.43; 7.60]	kJ/mol	[138.90; 139.42]
T(K) Enthalpy of fusion at a given temperature (kJ/mol) 7.45 7.5 7.55 7.6 139 139.20000000000002 139.4
ΔfusH	7.43	kJ/mol	138.90	NIST
ΔfusH	7.58	kJ/mol	139.40	NIST
ΔfusH	7.59	kJ/mol	139.40	NIST
ΔfusH	7.60	kJ/mol	139.40	NIST
ΔfusH	7.60	kJ/mol	139.42	NIST
ΔvapH	[26.30; 28.40]	kJ/mol	[290.00; 312.00]
T(K) Enthalpy of vaporization at a given temperature (kJ/mol) 26.5 27 27.5 28 28.5 290 300 310
ΔvapH	27.50 ± 0.10	kJ/mol	290.00	NIST
ΔvapH	28.40	kJ/mol	307.00	NIST
ΔvapH	28.30	kJ/mol	310.00	NIST
ΔvapH	26.30	kJ/mol	311.70	KDB
ΔvapH	26.31	kJ/mol	311.70	NIST
ΔvapH	26.30 ± 0.10	kJ/mol	312.00	NIST
n0	[1.38420; 1.38760]		[293.15; 298.15]
n0	1.38760		293.15	Isobari...
n0	1.38420		298.15	KDB
ρl	662.00	kg/m3	293.00	KDB
ΔfusS	[5.35; 54.49]	J/mol×K	[138.90; 139.42]
ΔfusS	5.35	J/mol×K	138.90	NIST
ΔfusS	54.37	J/mol×K	139.40	NIST
ΔfusS	54.49	J/mol×K	139.42	NIST
γ	0.02	N/m	298.20	KDB

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 202.65]	kPa	[225.05; 333.31]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.43288e+01
Coefficient B			-2.72849e+03
Coefficient C			-3.07250e+01
Temperature range, min.			225.05
Temperature range, max.			333.31
T(K) Vapor pressure (kPa) 0 50 100 150 200 250 300
Pvap	1.33	kPa	225.05	Calculated Property
Pvap	3.02	kPa	237.08	Calculated Property
Pvap	6.26	kPa	249.11	Calculated Property
Pvap	12.02	kPa	261.14	Calculated Property
Pvap	21.64	kPa	273.17	Calculated Property
Pvap	36.84	kPa	285.19	Calculated Property
Pvap	59.77	kPa	297.22	Calculated Property
Pvap	93.00	kPa	309.25	Calculated Property
Pvap	139.52	kPa	321.28	Calculated Property
Pvap	202.65	kPa	333.31	Calculated Property
Pvap	[2.09e-05; 3445.97]	kPa	[139.39; 471.00]	KDB Vap...
Equation			ln(Pvp) = A + B/T + C*ln(T) + D*T^2
Coefficient A			7.56700e+01
Coefficient B			-5.58161e+03
Coefficient C			-9.44186e+00
Coefficient D			1.09937e-05
Temperature range, min.			139.39
Temperature range, max.			471.00
T(K) Vapor pressure (kPa) 0 500 1000 1500 2000 2500 3000 3500 200 300 400
Pvap	2.09e-05	kPa	139.39	Calculated Property
Pvap	0.01	kPa	176.24	Calculated Property
Pvap	0.52	kPa	213.08	Calculated Property
Pvap	6.64	kPa	249.93	Calculated Property
Pvap	39.72	kPa	286.77	Calculated Property
Pvap	149.00	kPa	323.62	Calculated Property
Pvap	414.04	kPa	360.46	Calculated Property
Pvap	943.88	kPa	397.31	Calculated Property
Pvap	1885.03	kPa	434.15	Calculated Property
Pvap	3445.97	kPa	471.00	Calculated Property

Similar Compounds

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

Mixtures

• 2-Butene, 2-methyl- + Butane, 2-methyl-
• 2-Butene, 2-methyl- + Cyclopentane
• Isoprene + 2-Butene, 2-methyl-

Sources

• KDB Vapor Pressure Data
• Crippen Method
• Isobaric Vapor Liquid Equilibrium for Nine Binary Systems of Cracking C5 Fraction at 250 kPa
• Vapor Pressures and Vapor Liquid Critical Properties of Four Pentene Isomers
• Thermochemistry of Branched Ethers: Experimental Study of Chemical Equilibrium in the Reacting System of tert-Amyl Alkyl Ether Synthesis
• Thermochemistry of Benzyl Alcohol: Reaction Equilibria Involving Benzyl Alcohol and tert-Alkyl Ethers
• Joback Method
• KDB
• Aqueous Solubility Prediction Method
• Estimated Solubility Method
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

Note: Cheméo is only indexing the data, follow the source links to retrieve the latest data. The source is also providing more information like the publication year, authors and more. Take the time to validate and double check the source of the data.
Outlier This icon means that the value is more than 2 standard deviations away from the property mean.