Chemical Properties of 2-Pentene, 2-methyl- (CAS 625-27-4)

InChI

InChI=1S/C6H12/c1-4-5-6(2)3/h5H,4H2,1-3H3

InChI Key

JMMZCWZIJXAGKW-UHFFFAOYSA-N

Formula

C6H12

SMILES

CCC=C(C)C

Molecular Weight¹

84.16

CAS

625-27-4

Other Names

• (CH3)2C=CHC2H5
• 1,1-dimethyl-1-butene
• 2,4-dimethyl-2-butene
• 2-Methyl-2-pentene
• 2-Methyl-pentene-2
• 2-Methylpent-2-ene
• 2-ethyl-1,1-dimethylethylene
• 2-pentene, 2-methyl
• 4-METHYL-3-PENTENE

• ω : Acentric Factor.
• PAff : Proton affinity (kJ/mol).
• BasG : Gas basicity (kJ/mol).
• C_p,gas : Ideal gas 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_fusH° : Enthalpy of fusion at standard conditions (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.
• γ : Surface Tension (N/m).
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• V_c : Critical Volume (m³/kmol).
• Z_c : Critical Compressibility.
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ω	0.2290		KDB
PAff	812.00	kJ/mol	NIST
BasG	783.10	kJ/mol	NIST
ΔfG°	71.26	kJ/mol	KDB
Δc,grossH	3977.56	kJ/mol	KDB
Δc,netH	3713.467	kJ/mol	KDB
ΔfH°gas	-66.53	kJ/mol	KDB
ΔfusH°	10.19	kJ/mol	Joback Calculated Property
ΔvapH°	[31.60; 31.60]	kJ/mol
ΔvapH°	31.60	kJ/mol	NIST
ΔvapH°	31.60	kJ/mol	NIST
ΔvapH°	31.60	kJ/mol	NIST
IE	8.58	eV	NIST
log10WS	-2.19		Crippen Calculated Property
logPoct/wat	2.363		Crippen Calculated Property
McVol	91.100	ml/mol	McGowan Calculated Property
NFPA Fire	3		KDB
NFPA Health	1		KDB
Pc	3280.00	kPa	KDB
Inp	[587.18; 620.00]
Inp	607.30		NIST
Inp	597.70		NIST
Inp	598.00		NIST
Inp	605.00		NIST
Inp	605.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	606.20		NIST
Inp	606.00		NIST
Inp	598.10		NIST
Inp	597.90		NIST
Inp	607.00		NIST
Inp	607.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	611.50		NIST
Inp	611.30		NIST
Inp	611.10		NIST
Inp	610.90		NIST
Inp	610.70		NIST
Inp	610.50		NIST
Inp	606.00		NIST
Inp	600.00		NIST
Inp	606.00		NIST
Inp	606.40		NIST
Inp	606.80		NIST
Inp	607.20		NIST
Inp	607.60		NIST
Inp	608.00		NIST
Inp	608.50		NIST
Inp	606.30		NIST
Inp	606.60		NIST
Inp	606.50		NIST
Inp	606.40		NIST
Inp	610.90		NIST
Inp	606.40		NIST
Inp	598.00		NIST
Inp	598.00		NIST
Inp	597.30		NIST
Inp	595.00		NIST
Inp	598.00		NIST
Inp	598.00		NIST
Inp	597.56		NIST
Inp	600.00		NIST
Inp	600.00		NIST
Inp	595.00		NIST
Inp	598.00		NIST
Inp	598.00		NIST
Inp	599.00		NIST
Inp	598.00		NIST
Inp	599.00		NIST
Inp	607.00		NIST
Inp	600.00		NIST
Inp	608.00		NIST
Inp	609.00		NIST
Inp	607.00		NIST
Inp	608.00		NIST
Inp	605.00		NIST
Inp	606.70		NIST
Inp	606.30		NIST
Inp	604.60		NIST
Inp	Outlier 587.18		NIST
Inp	597.70		NIST
Inp	597.00		NIST
Inp	599.00		NIST
Inp	599.00		NIST
Inp	Outlier 616.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	606.00		NIST
Inp	607.00		NIST
Inp	Outlier 620.00		NIST
Inp	606.00		NIST
Inp	607.00		NIST
Inp	607.00		NIST
Inp	598.00		NIST
Inp	598.00		NIST
Inp	608.00		NIST
Inp	605.00		NIST
Inp	605.00		NIST
Inp	607.00		NIST
Inp	609.00		NIST
Inp	609.00		NIST
Inp	598.00		NIST
Inp	600.00		NIST
Inp	Outlier 587.18		NIST
Inp	607.00		NIST
Inp	604.60		NIST
Inp	608.00		NIST
Inp	598.00		NIST
Inp	597.70		NIST
I	[642.00; 654.00]
I	654.00		NIST
I	642.00		NIST
Tboil	[273.15; 349.45]	K
Tboil	340.50	K	KDB
Tboil	340.50	K	NIST
Tboil	340.41 ± 0.20	K	NIST
Tboil	339.70 ± 1.00	K	NIST
Tboil	338.15 ± 2.00	K	NIST
Tboil	339.15 ± 2.00	K	NIST
Tboil	340.51 ± 0.20	K	NIST
Tboil	340.44 ± 0.20	K	NIST
Tboil	340.45 ± 0.30	K	NIST
Tboil	340.45 ± 0.30	K	NIST
Tboil	340.41 ± 0.30	K	NIST
Tboil	349.45 ± 0.30	K	NIST
Tboil	340.41 ± 0.30	K	NIST
Tboil	340.40 ± 0.30	K	NIST
Tboil	340.42 ± 0.30	K	NIST
Tboil	340.40 ± 0.30	K	NIST
Tboil	340.50 ± 0.50	K	NIST
Tboil	339.15 ± 2.00	K	NIST
Tboil	340.35 ± 0.50	K	NIST
Tboil	340.35 ± 0.60	K	NIST
Tboil	340.25 ± 0.50	K	NIST
Tboil	339.65 ± 3.00	K	NIST
Tboil	340.10 ± 1.00	K	NIST
Tboil	340.35 ± 0.60	K	NIST
Tboil	340.50 ± 0.60	K	NIST
Tboil	340.05 ± 0.50	K	NIST
Tboil	Outlier 273.15 ± 0.40	K	NIST
Tc	[509.30; 518.00]	K
Tc	518.00	K	KDB
Tc	509.30	K	Gas-Liq...
Tfus	[137.99; 138.50]	K
Tfus	138.10	K	KDB
Tfus	137.99 ± 0.40	K	NIST
Tfus	138.09 ± 0.30	K	NIST
Tfus	138.04 ± 0.30	K	NIST
Tfus	138.04 ± 0.40	K	NIST
Tfus	138.40 ± 0.50	K	NIST
Tfus	138.50 ± 0.30	K	NIST
Vc	0.351	m3/kmol	KDB
Zc	0.2673100		KDB

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[145.07; 201.67]	J/mol×K	[340.72; 516.68]
Cp,gas	145.07	J/mol×K	340.72	Joback Calculated Property
Cp,gas	155.60	J/mol×K	370.05	Joback Calculated Property
Cp,gas	165.66	J/mol×K	399.37	Joback Calculated Property
Cp,gas	175.29	J/mol×K	428.70	Joback Calculated Property
Cp,gas	184.49	J/mol×K	458.03	Joback Calculated Property
Cp,gas	193.27	J/mol×K	487.36	Joback Calculated Property
Cp,gas	201.67	J/mol×K	516.68	Joback Calculated Property
ΔvapH	[29.00; 32.40]	kJ/mol	[311.50; 340.50]
ΔvapH	32.40	kJ/mol	311.50	NIST
ΔvapH	29.00	kJ/mol	340.50	KDB
n0	[1.39739; 1.40030]		[293.15; 298.15]
n0	1.40030		293.15	A novel...
n0	1.39739		298.15	KDB
ρl	691.00	kg/m3	289.00	KDB
γ	0.02	N/m	298.20	KDB

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 202.68]	kPa	[245.13; 364.46]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.40723e+01
Coefficient B			-2.86838e+03
Coefficient C			-3.70430e+01
Temperature range, min.			245.13
Temperature range, max.			364.46
Pvap	1.33	kPa	245.13	Calculated Property
Pvap	3.04	kPa	258.39	Calculated Property
Pvap	6.33	kPa	271.65	Calculated Property
Pvap	12.18	kPa	284.91	Calculated Property
Pvap	21.92	kPa	298.17	Calculated Property
Pvap	37.27	kPa	311.42	Calculated Property
Pvap	60.35	kPa	324.68	Calculated Property
Pvap	93.65	kPa	337.94	Calculated Property
Pvap	140.03	kPa	351.20	Calculated Property
Pvap	202.68	kPa	364.46	Calculated Property
Pvap	[6.04e-07; 3158.63]	kPa	[138.07; 514.00]	KDB Vap...
Equation			ln(Pvp) = A + B/T + C*ln(T) + D*T^2
Coefficient A			6.70586e+01
Coefficient B			-5.92015e+03
Coefficient C			-7.83366e+00
Coefficient D			5.36185e-06
Temperature range, min.			138.07
Temperature range, max.			514.00
Pvap	6.04e-07	kPa	138.07	Calculated Property
Pvap	1.73e-03	kPa	179.84	Calculated Property
Pvap	0.18	kPa	221.61	Calculated Property
Pvap	3.64	kPa	263.38	Calculated Property
Pvap	28.28	kPa	305.15	Calculated Property
Pvap	123.86	kPa	346.92	Calculated Property
Pvap	375.10	kPa	388.69	Calculated Property
Pvap	888.04	kPa	430.46	Calculated Property
Pvap	1776.13	kPa	472.23	Calculated Property
Pvap	3158.63	kPa	514.00	Calculated Property

Similar Compounds

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

Mixtures

• Ethanol + 2-Pentene, 2-methyl-

Sources

• KDB Vapor Pressure Data
• Crippen Method
• Crippen Method
• A novel static analytical apparatus for phase equilibrium measurements
• Gas-Liquid Critical Temperatures of Some Alkenes, Amines, and Cyclic Hydrocarbons
• Joback Method
• KDB
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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