Ethynol
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| Names | |||
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Systematic IUPAC name
Ethynol
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| Other names
Ynol, ethynylalcohol, hydroxyacetylene
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| Identifiers | |||
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3D model (Jmol)
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PubChem CID
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| Properties | |||
| C2H2O | |||
| Molar mass | 42.04 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 | |||
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Std enthalpy of
formation (ΔfH |
41.6 kJ mol−1 | ||
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is   ?) |
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| Infobox references | |||
Ethynol is an alcohol (ynol) with the formula C2H2O. It is the much less stable tautomer of ethenone.
At low temperature in a solid argon matrix it is possible to isomerize ethenone to form ethynol.
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