1-Butyne
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| Names | |
|---|---|
|  IUPAC name
 but-1-yne  | |
|  Other names
 But-1-yne Ethylacetylene Ethylethyne  | |
| Identifiers | |
|  107-00-6  | |
| 3D model (Jmol) | Interactive image | 
| ChEBI |  CHEBI:48087  | 
| ChemSpider |  7558  | 
| ECHA InfoCard | 100.003.139 | 
| UNII |  A6B47CPN6W  | 
 
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| Properties[1] | |
| C4H6 | |
| Molar mass | 54.091 g/mol | 
| Density | 0.6783 g cm−3[1] | 
| Melting point | −125.7 °C (−194.3 °F; 147.5 K)[1] | 
| Boiling point | 8.08 °C (46.54 °F; 281.23 K)[1] | 
|   Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).  | |
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| Infobox references | |
1-Butyne, also known as ethylacetylene, but-1-yne, ethylethyne, and UN 2452, is an extremely flammable and reactive alkyne with chemical formula C4H6 and CAS number 107-00-6 that is used in the synthesis of organic compounds. It occurs as a colorless gas.[1]
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