2-butynoic acid(CAS#590-93-2)
| Hazard Symbols | C – Corrosive |
| Risk Codes | R34 – Causes burns R20/21/22 – Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 – Take off immediately all contaminated clothing. S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection. S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3261 8/PG 2 |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29161900 |
| Hazard Class | 8 |
| Packing Group | II |
Introduction
Used in a series of reactions to synthesize fibers, such as the cyclic acylation of phenols to cyclic ketones or chromones, and the cyclization of γ-butyrolactone.
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