Chemical Properties of 4-Pentynoic acid (CAS 6089-09-4)

4-Pentynoic acid

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InChI Key
Molecular Weight1
Other Names
  • Pent-4-yn-1-oic acid
  • Propargylacetic acid
  • pent-4-ynoic acid
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Physical Properties

Property Value Unit Source
Δf -51.45 kJ/mol Joback Calculated Property
Δfgas -119.44 kJ/mol Joback Calculated Property
Δfus 17.37 kJ/mol Joback Calculated Property
Δvap 50.01 kJ/mol Joback Calculated Property
log10WS -0.81 Crippen Calculated Property
logPoct/wat 0.484 Crippen Calculated Property
McVol 80.150 ml/mol McGowan Calculated Property
Pc 5138.68 kPa Joback Calculated Property
Tboil 449.97 K Joback Calculated Property
Tc 634.40 K Joback Calculated Property
Tfus 329.00 ± 3.00 K NIST
Vc 0.302 m3/kmol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [155.01; 187.02] J/mol×K [449.97; 634.40] Show Hide
Cp,gas 155.01 J/mol×K 449.97 Joback Calculated Property
Cp,gas 161.06 J/mol×K 480.71 Joback Calculated Property
Cp,gas 166.80 J/mol×K 511.45 Joback Calculated Property
Cp,gas 172.26 J/mol×K 542.18 Joback Calculated Property
Cp,gas 177.44 J/mol×K 572.92 Joback Calculated Property
Cp,gas 182.35 J/mol×K 603.66 Joback Calculated Property
Cp,gas 187.02 J/mol×K 634.40 Joback Calculated Property

Pressure Dependent Properties

Property Value Unit Pressure (kPa) Source
Tboilr 383.20 K 4.00 NIST


Property Value Unit Temperature (K) Source
Pvap [1.35; 202.27] kPa [383.15; 529.15] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.56970e+01
Coefficient B-4.66061e+03
Coefficient C-8.04710e+01
Temperature range, min.383.15
Temperature range, max.529.15
Pvap 1.35 kPa 383.15 Calculated Property
Pvap 2.95 kPa 399.37 Calculated Property
Pvap 5.99 kPa 415.59 Calculated Property
Pvap 11.38 kPa 431.82 Calculated Property
Pvap 20.44 kPa 448.04 Calculated Property
Pvap 34.93 kPa 464.26 Calculated Property
Pvap 57.16 kPa 480.48 Calculated Property
Pvap 90.01 kPa 496.71 Calculated Property
Pvap 136.99 kPa 512.93 Calculated Property
Pvap 202.27 kPa 529.15 Calculated Property

Similar Compounds

Butanedioic acid. 5-Hexynoic acid. Butanoic acid. C4H5F3O2. 4-Pentyn-1-ol. Undec-10-ynoic acid. 17-Octadecynoic acid. Butanedioic acid, monomethyl ester. Pentanedioic acid. 4-Bromobutyric acid. Butanoic acid, 4-hydroxy-. Pentanoic acid, 4-oxo-. Butanoic acid, 4-chloro-. Pentanoic acid. 2-Oxopentanedioic acid.

Find more compounds similar to 4-Pentynoic acid.


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