Chemical Properties of 1,3-Pentadiene, 2-methyl- (CAS 1118-58-7)

1,3-Pentadiene, 2-methyl-

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InChI Key
Molecular Weight1
Other Names
  • 1,3-Dimethyl-1,3-butadiene
  • 2,4-Dimethyl-1,3-butadiene
  • 2-Methyl-1,3-pentadiene
  • 2-Methyl-1,3-pentadiene,c&t
  • 2-methylpenta-1,3-diene
  • CH2=C(CH3)CH=CHCH3

Physical Properties

Property Value Unit Source
PAff 864.90 kJ/mol NIST
BasG 836.00 kJ/mol NIST
Δf 159.15 kJ/mol Joback Calculated Property
Δfgas 65.69 kJ/mol Joback Calculated Property
Δfus 8.91 kJ/mol Joback Calculated Property
Δvap 28.32 kJ/mol Joback Calculated Property
IE [8.42; 8.47] eV Show Hide
IE 8.47 ± 0.02 eV NIST
IE 8.42 eV NIST
log10WS -2.04 Crippen Calculated Property
logPoct/wat 2.139 Crippen Calculated Property
McVol 86.800 ml/mol McGowan Calculated Property
Pc 3480.65 kPa Joback Calculated Property
Inp [624.00; 635.00]   Show Hide
Inp 624.00 NIST
Inp 629.00 NIST
Inp 635.00 NIST
Inp 630.00 NIST
Inp 624.00 NIST
Inp 630.00 NIST
Inp 629.00 NIST
Tboil 337.40 K Joback Calculated Property
Tc 517.19 K Joback Calculated Property
Tfus 136.58 K Joback Calculated Property
Vc 0.334 m3/kmol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [132.16; 184.75] J/mol×K [337.40; 517.19] Show Hide
Cp,gas 132.16 J/mol×K 337.40 Joback Calculated Property
Cp,gas 142.08 J/mol×K 367.36 Joback Calculated Property
Cp,gas 151.51 J/mol×K 397.33 Joback Calculated Property
Cp,gas 160.47 J/mol×K 427.29 Joback Calculated Property
Cp,gas 168.98 J/mol×K 457.26 Joback Calculated Property
Cp,gas 177.07 J/mol×K 487.22 Joback Calculated Property
Cp,gas 184.75 J/mol×K 517.19 Joback Calculated Property


Property Value Unit Temperature (K) Source
Pvap [1.15; 202.63] kPa [258.25; 370.20] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.54766e+01
Coefficient B-3.37641e+03
Coefficient C-3.80470e+01
Temperature range, min.258.25
Temperature range, max.370.20
Pvap 1.15 kPa 258.25 Calculated Property
Pvap 2.62 kPa 270.69 Calculated Property
Pvap 5.47 kPa 283.13 Calculated Property
Pvap 10.65 kPa 295.57 Calculated Property
Pvap 19.48 kPa 308.01 Calculated Property
Pvap 33.80 kPa 320.44 Calculated Property
Pvap 55.97 kPa 332.88 Calculated Property
Pvap 88.98 kPa 345.32 Calculated Property
Pvap 136.44 kPa 357.76 Calculated Property
Pvap 202.63 kPa 370.20 Calculated Property

Similar Compounds

1,3-Pentadiene, 2-methyl-, (E)-. 2-Methyl-1, cis-3-pentadiene. 2,4-Hexadiene, 3-methyl-. 4-Methyl-2,4-pentadienal. 2,5-dimethyl-1,3,5-hexatriene. 2,5-Dimethyl-(E)-1,3,5-hexatriene. 1,6-Dimethylhepta-1,3,5-triene. 1,3-Pentadiene, 3-methyl-. 1,3-Pentadiene, 3-methyl-, (Z)-. 1,3-Pentadiene, 3-methyl-, (Z)-. 1,3-Pentadiene, 2,4-dimethyl-. 2,6-Dimethyl-1,3(E),5(Z),7-octatetraene. 2,6-Dimethyl-1,3,5,7-octatetraene. Cosmene. 2,6-Dimethyl-1,3,5,7-octatetraene, E,E-.

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