Introduction：Basic information about CAS 503-17-3|But-2-yne, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
| Common Name | But-2-yne |
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| CAS Number | 503-17-3 | Molecular Weight | 54.090 |
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| Density | 0.7±0.1 g/cm3 | Boiling Point | 25.6±3.0 °C at 760 mmHg |
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| Molecular Formula | C4H6 | Melting Point | -32 °C |
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| MSDS | / | Flash Point | -48.5±11.2 °C |
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Names
| Name | but-2-yne |
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| Synonym | More Synonyms |
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Chemical & Physical Properties
| Density | 0.7±0.1 g/cm3 |
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| Boiling Point | 25.6±3.0 °C at 760 mmHg |
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| Melting Point | -32 °C |
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| Molecular Formula | C4H6 |
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| Molecular Weight | 54.090 |
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| Flash Point | -48.5±11.2 °C |
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| Exact Mass | 54.046951 |
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| LogP | 1.46 |
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| Vapour Pressure | 745.1±0.0 mmHg at 25°C |
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| Index of Refraction | 1.393 |
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| InChIKey | XNMQEEKYCVKGBD-UHFFFAOYSA-N |
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| SMILES | CC#CC |
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| Storage condition | 2-8°C |
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Safety Information
| Hazard Codes | F+,Xi |
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| Risk Phrases | R12;R36/37 |
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| Safety Phrases | S16-S26-S36 |
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| RIDADR | UN 1144 3/PG 1 |
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| WGK Germany | 3 |
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| RTECS | GQ7210000 |
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| Packaging Group | I |
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| Hazard Class | 3 |
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Synonyms
| 2-Butyne |
| Dimethyl acetylene |
| 1,2-dimethylvinylene |
| Dimethylacetylene |
| UN1144 |
| MFCD00009275 |
| EINECS 207-962-2 |
| Crotonylene |
| 1-methyl-1-propynyl |
