Chemical Properties of 1-Propene, 2-methyl- (CAS 115-11-7)

1-Propene, 2-methyl-

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InChI
InChI=1S/C4H8/c1-4(2)3/h1H2,2-3H3
InChI Key
VQTUBCCKSQIDNK-UHFFFAOYSA-N
Formula
C4H8
SMILES
C=C(C)C
Molecular Weight1
56.11
CAS
115-11-7
Other Names
  • 1,1-Dimethylethene
  • 1,1-Dimethylethylene
  • 2-Methyl-1-propene
  • 2-Methylpropene
  • 2-Methylpropylene
  • Isobutene
  • Isobutylene
  • Isopropylidenemethylene
  • Methylpropene
  • Propene, 2-methyl-
  • UN 1055
  • iso-C4H8
  • «gamma»-Butylene
Sources

Physical Properties

Property Value Unit Source
PAff [802.10; 805.00] kJ/mol Show Hide
PAff 802.10 kJ/mol NIST
PAff 802.30 ± 4.80 kJ/mol NIST
PAff 802.30 ± 4.80 kJ/mol NIST
PAff 805.00 ± 6.70 kJ/mol NIST
BasG 775.60 kJ/mol NIST
BasG 776.30 ± 2.70 kJ/mol NIST
BasG 776.30 ± 2.70 kJ/mol NIST
Δcgas -2699.50 ± 1.00 kJ/mol NIST
Δcgas -2722.00 kJ/mol NIST
Δf 62.09 kJ/mol Joback Calculated Property
Δfgas -17.90 ± 1.10 kJ/mol NIST
Δfus 3.53 kJ/mol Joback Calculated Property
Δvap 20.60 kJ/mol NIST
IE [9.17; 9.45] eV Show Hide
IE 9.22 ± 0.02 eV NIST
IE 9.19 eV NIST
IE 9.24 ± 0.05 eV NIST
IE 9.24 ± 0.02 eV NIST
IE 9.24 ± 0.00 eV NIST
IE 9.19 eV NIST
IE 9.21 eV NIST
IE 9.17 eV NIST
IE 9.23 ± 0.02 eV NIST
IE 9.23 eV NIST
IE 9.41 eV NIST
IE 9.39 eV NIST
IE Outlier 9.45 eV NIST
logPoct/wat 1.582 Crippen Calculated Property
Pc 4000.00 ± 10.00 kPa NIST
Pc 4000.31 ± 10.13 kPa NIST
gas 293.59 J/mol×K NIST
liquid 194.00 J/mol×K NIST
Tboil [266.20; 269.15] K Show Hide
Tboil 266.26 K NIST
Tboil 266.30 K NIST
Tboil 268.15 ± 1.50 K NIST
Tboil 267.15 ± 1.50 K NIST
Tboil Outlier 268.65 ± 1.50 K NIST
Tboil 266.40 ± 0.50 K NIST
Tboil 267.15 ± 1.00 K NIST
Tboil 267.15 ± 1.00 K NIST
Tboil 266.55 ± 0.70 K NIST
Tboil 266.35 ± 0.50 K NIST
Tboil 266.65 ± 2.00 K NIST
Tboil 266.26 ± 0.55 K NIST
Tboil 266.55 ± 0.30 K NIST
Tboil 266.22 ± 0.20 K NIST
Tboil 267.15 ± 2.00 K NIST
Tboil 267.15 ± 2.00 K NIST
Tboil 266.55 ± 1.00 K NIST
Tboil 266.45 ± 0.50 K NIST
Tboil 267.15 ± 2.00 K NIST
Tboil 266.85 ± 1.00 K NIST
Tboil 266.20 ± 0.50 K NIST
Tboil 267.15 ± 1.50 K NIST
Tboil 266.35 ± 0.20 K NIST
Tboil 266.55 ± 0.50 K NIST
Tboil 266.55 ± 2.00 K NIST
Tboil 267.15 ± 2.00 K NIST
Tboil Outlier 269.15 ± 2.00 K NIST
Tboil 267.15 ± 2.00 K NIST
Tc 417.90 ± 0.10 K NIST
Tc 417.88 ± 0.10 K NIST
Tc 420.15 ± 2.00 K NIST
Tfus 132.38 K NIST
Tfus 132.45 ± 0.30 K NIST
Tfus 125.40 ± 0.50 K NIST
Ttriple 132.40 ± 0.20 K NIST
Vc 0.239 m3/kg-mol NIST

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [75.86; 100.25] J/mol×K [239.15; 353.15] Show Hide
Cp,gas 75.86 ± 0.38 J/mol×K 239.15 NIST
Cp,gas 82.89 ± 0.41 J/mol×K 272.15 NIST
Cp,gas 91.67 ± 0.46 J/mol×K 312.15 NIST
Cp,gas 100.25 ± 0.50 J/mol×K 353.15 NIST
Cp,liquid 121.42 J/mol×K 253.1 NIST
Cp,liquid 121.30 J/mol×K 266.26 NIST
ΔfusH 5.92 kJ/mol 132.4 NIST
ΔfusH 5.92 kJ/mol 132.4 NIST
ΔfusH 5.92 kJ/mol 132.4 NIST
ΔvapH [22.20; 23.10] kJ/mol [244.50; 394.50] Show Hide
Plot of Enthalpy of vaporization at a given temperature.
ΔvapH 22.80 kJ/mol 244.5 NIST
ΔvapH 23.10 kJ/mol 245.5 NIST
ΔvapH 22.70 kJ/mol 289.5 NIST
ΔvapH 22.20 kJ/mol 343.0 NIST
ΔvapH 22.20 kJ/mol 350.5 NIST
ΔvapH 22.30 kJ/mol 394.5 NIST
ΔfusS 44.71 J/mol×K 132.4 NIST

Molecular Descriptors

Joback and Reid Groups
=CH2 1
-CH3 2
=C< 1

Similar Compounds

Triisobutylene. Tetraisobutylene. 2-Methylallyl radical. 2-Butene, 2-methyl-. EtCH=CH. CH3CHCH=CH2. 1-Methylcyclopropyl. But-3-en-1-yl radical. 1-Butene. Cyclopropenylidene. Cyclopropene. Cyclopropenyl radical. 1,2-Butadiene, 3-methyl-. 1-Butene, 2-methyl-. Butyl, 2-methylene-.

Find more compounds similar to 1-Propene, 2-methyl-.

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Outlier This icon means that the value is more than 2 standard deviations away from the property mean.