Chemical Properties of 2-Butynoic acid (CAS 590-93-2)

2-Butynoic acid

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InChI Key
Molecular Weight1
Other Names
  • 1-Propynecarboxylic acid
  • 3-Methylpropiolic acid
  • Tetrolic acid
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Physical Properties

Property Value Unit Source
Δf -80.14 kJ/mol Joback Calculated Property
Δfgas -118.40 kJ/mol Joback Calculated Property
Δfus 14.92 kJ/mol Joback Calculated Property
Δvap 50.08 kJ/mol Joback Calculated Property
log10WS -0.39 Crippen Calculated Property
logPoct/wat 0.094 Crippen Calculated Property
McVol 66.060 ml/mol McGowan Calculated Property
Pc 6037.30 kPa Joback Calculated Property
Tboil 476.20 K NIST
Tc 643.82 K Joback Calculated Property
Tfus 351.69 K Joback Calculated Property
Vc 0.246 m3/kmol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [115.39; 141.31] J/mol×K [445.97; 643.82] Show Hide
Cp,gas 115.39 J/mol×K 445.97 Joback Calculated Property
Cp,gas 120.19 J/mol×K 478.95 Joback Calculated Property
Cp,gas 124.79 J/mol×K 511.92 Joback Calculated Property
Cp,gas 129.20 J/mol×K 544.90 Joback Calculated Property
Cp,gas 133.42 J/mol×K 577.87 Joback Calculated Property
Cp,gas 137.46 J/mol×K 610.85 Joback Calculated Property
Cp,gas 141.31 J/mol×K 643.82 Joback Calculated Property

Pressure Dependent Properties

Property Value Unit Pressure (kPa) Source
Tboilr [372.70; 373.00] K [2.00; 2.40] Show Hide
Tboilr 373.00 K 2.00 NIST
Tboilr 372.70 K 2.40 NIST


Property Value Unit Temperature (K) Source
Pvap [1.35; 202.89] kPa [363.15; 503.15] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.56871e+01
Coefficient B-4.45703e+03
Coefficient C-7.35340e+01
Temperature range, min.363.15
Temperature range, max.503.15
Pvap 1.35 kPa 363.15 Calculated Property
Pvap 2.95 kPa 378.71 Calculated Property
Pvap 5.99 kPa 394.26 Calculated Property
Pvap 11.40 kPa 409.82 Calculated Property
Pvap 20.48 kPa 425.37 Calculated Property
Pvap 35.01 kPa 440.93 Calculated Property
Pvap 57.31 kPa 456.48 Calculated Property
Pvap 90.26 kPa 472.04 Calculated Property
Pvap 137.40 kPa 487.59 Calculated Property
Pvap 202.89 kPa 503.15 Calculated Property

Similar Compounds

Methyl 2-butynoate. 2-Butyn-1-ol. 2-Butynedioic acid. 2-Butynal. Propiolic acid. 2-Butyne-1,4-diol. 2-Pentyn-4-one. Cyanopropyne. 2,4-Hexadiyne. CH3-CC-CC-CH2. 2-Butyne. But-2-yn-1-yl radical. 2,4-Hexadiyne-1,6-diol. 3-Butynoic acid. 2-Hexynoic acid.

Find more compounds similar to 2-Butynoic acid.


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