Chemical Properties of 2-Butyn-1-ol (CAS 764-01-2)


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InChI Key
Molecular Weight1
Other Names
  • 2-Butyne-1-ol
  • 2-Butynol
  • 2-Butynyl alcohol
  • But-2-yn-1-ol
  • CH3C«equiv»CCH2OH
  • CH3C«equiv»CCH2OH
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Physical Properties

Property Value Unit Source
Δf 48.78 kJ/mol Joback Calculated Property
Δfgas -5.82 kJ/mol Joback Calculated Property
Δfus 13.33 kJ/mol Joback Calculated Property
Δvap 43.33 kJ/mol Joback Calculated Property
IE 9.78 eV NIST
log10WS -0.56 Crippen Calculated Property
logPoct/wat 0.002 Crippen Calculated Property
McVol 64.490 ml/mol McGowan Calculated Property
Pc 5486.97 kPa Joback Calculated Property
Inp [695.00; 695.00]   Show Hide
Inp 695.00 NIST
Inp 695.00 NIST
Tboil [414.00; 415.70] K Show Hide
Tboil 415.70 K NIST
Tboil 415.00 K NIST
Tboil 414.00 ± 2.00 K NIST
Tc 577.58 K Joback Calculated Property
Tfus 301.76 K Joback Calculated Property
Vc 0.240 m3/kmol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [108.41; 137.70] J/mol×K [392.10; 577.58] Show Hide
Cp,gas 108.41 J/mol×K 392.10 Joback Calculated Property
Cp,gas 113.75 J/mol×K 423.01 Joback Calculated Property
Cp,gas 118.91 J/mol×K 453.93 Joback Calculated Property
Cp,gas 123.87 J/mol×K 484.84 Joback Calculated Property
Cp,gas 128.66 J/mol×K 515.75 Joback Calculated Property
Cp,gas 133.27 J/mol×K 546.67 Joback Calculated Property
Cp,gas 137.70 J/mol×K 577.58 Joback Calculated Property

Pressure Dependent Properties

Property Value Unit Pressure (kPa) Source
Tboilr [325.70; 362.00] K [1.90; 13.30] Show Hide
Tboilr 325.70 K 1.90 NIST
Tboilr 362.00 K 13.30 NIST


Property Value Unit Temperature (K) Source
Pvap [1.30; 203.40] kPa [319.15; 438.15] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.64585e+01
Coefficient B-4.25045e+03
Coefficient C-5.67150e+01
Temperature range, min.319.15
Temperature range, max.438.15
Pvap 1.30 kPa 319.15 Calculated Property
Pvap 2.83 kPa 332.37 Calculated Property
Pvap 5.73 kPa 345.59 Calculated Property
Pvap 10.90 kPa 358.82 Calculated Property
Pvap 19.67 kPa 372.04 Calculated Property
Pvap 33.83 kPa 385.26 Calculated Property
Pvap 55.81 kPa 398.48 Calculated Property
Pvap 88.68 kPa 411.71 Calculated Property
Pvap 136.33 kPa 424.93 Calculated Property
Pvap 203.40 kPa 438.15 Calculated Property

Similar Compounds

2-Butyne-1,4-diol. 2,4-Hexadiyne-1,6-diol. 2-Pentyn-1-ol. Propargyl alcohol. 2-Butynoic acid. 2-Butyn-1-yl chloroformate. But-2-yn-1-yl radical. 2-Butyne. 3-Pentyn-2-ol. Acetonitrile, hydroxy-. 2-Hexyn-1-ol. 1,6-Dioxacyclodeca-3,8-diyne. Carbonic acid, di(but-2-yn-1-yl) ester. 2-Butyne, 1-chloro-. 2-Butynal.

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