Chemical Properties of 2-Butynedinitrile (CAS 1071-98-3)


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InChI Key
Molecular Weight1
Other Names
  • Acetylenedicarbonitrile
  • Dicyanoacetylene
  • 1,2-Dicyanoacetylene
  • NCC«equiv»CCN
  • Dicyanoethyne
  • Sous-azote de carbone
  • C4N2
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Physical Properties

Property Value Unit Source
Δcliquid -2074.40 ± 1.30 kJ/mol NIST
Δcsolid -2156.00 kJ/mol NIST
Δf 451.96 kJ/mol Joback Calculated Property
Δfgas 529.30 kJ/mol NIST
Δfliquid 500.40 kJ/mol NIST
Δfus 12.25 kJ/mol Joback Calculated Property
Δsub 44.25 kJ/mol NIST
Δvap 28.90 kJ/mol NIST
IE [11.40; 11.84] eV Show Hide
IE 11.81 ± 0.02 eV NIST
IE 11.81 ± 0.01 eV NIST
IE 11.40 ± 0.20 eV NIST
IE 11.84 eV NIST
IE 11.84 eV NIST
log10WS -1.02 Crippen Calculated Property
logPoct/wat 0.037 Crippen Calculated Property
McVol 61.380 ml/mol McGowan Calculated Property
Pc 4492.23 kPa Joback Calculated Property
Tboil 349.70 K NIST
Tc 749.07 K Joback Calculated Property
Tfus 370.92 K Joback Calculated Property
Vc 0.274 m3/kmol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [93.31; 107.33] J/mol×K [504.08; 749.07] Show Hide
Cp,gas 93.31 J/mol×K 504.08 Joback Calculated Property
Cp,gas 95.94 J/mol×K 544.91 Joback Calculated Property
Cp,gas 98.44 J/mol×K 585.74 Joback Calculated Property
Cp,gas 100.84 J/mol×K 626.58 Joback Calculated Property
Cp,gas 103.11 J/mol×K 667.41 Joback Calculated Property
Cp,gas 105.28 J/mol×K 708.24 Joback Calculated Property
Cp,gas 107.33 J/mol×K 749.07 Joback Calculated Property
ΔsubH 44.30 kJ/mol 268.00 NIST
ΔvapH 27.30 kJ/mol 322.50 NIST

Similar Compounds

Cyanoethynyl radical. 2-Propynenitrile, 3-fluoro-. Propiolonitrile. Cyanopropyne. 2-Butynenitrile, 4,4,4-trifluoro-. Methylidyne, cyano-. Cyanogen. 1,3-Butadiyne, 1,4-difluoro-. Butadiynyl. HCCN radical. 1,3-Butadiyne. Butadiyne-d2. Propynylidene. 2-Propynylidyne. 1-Oxoprop-2-ynyl.

Find more compounds similar to 2-Butynedinitrile.


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