Ethynol
Chemical compound / From Wikipedia, the free encyclopedia
Not to be confused with ethanol or Vinyl alcohol.
Ethynol (or hydroxyacetylene, ethynyl alcohol) is an alkyne–alcohol (ynol) with the formula C2H2O. It is the much-less-stable tautomer of ethenone.
Quick Facts Names, Identifiers ...
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Names | |||
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Systematic IUPAC name
Ethynol[1] | |||
Other names
Ynol, ethynyl alcohol, hydroxyacetylene | |||
Identifiers | |||
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PubChem CID |
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Properties | |||
C2H2O | |||
Molar mass | 42.037 g·mol−1 | ||
Density | 0.981g/cm | ||
Boiling point | 77.1 °C (170.8 °F; 350.2 K) @ 760mmHg | ||
Hazards | |||
Flash point | 14.7 °C (58.5 °F; 287.8 K) | ||
Thermochemistry | |||
Std enthalpy of formation (ΔfH⦵298) |
41.6 kJ mol−1 | ||
Related compounds | |||
Related compounds |
Propargyl alcohol | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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At low temperature in a solid argon matrix it is possible to tautomerise ethenone to form ethynol.[2][3]