| CAS Number | 590-93-2 |
| Catalog Description | 2-Butynoic acid, 98% |
| Synonym | Tetrolic acid |
| MDL Number | MFCD00004363 |
| Master Molecular formula | C4H4O2 |
| Molecular formula | C4H4O2 |
| Melting point in C | 78-80° |
| Beilstein | 1740205 |
| EC Number | 209-695-7 |
| Shipping | Hazardous for shipping |
| CAS Number | 590-93-2 |
| UN# | UN3261 |
| Haz Class | 8 |
| Packing Group | II |
| Signal Word | Danger |
| Pictogram code 1 |
|
| H Phrases | H314-H318 |
| P Phrases | P260-P303+P361+P353-P305+P351+P338-P310-P405-P501A |
| TSCA | Yes |
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