CAS: 471-25-0 EC No: 207-437-8 MDL No: MFCD00004360 RTECS: UD9300000 UN No: UN2920; Haz Class: 8 (3); Packing Group: II Liquid Linear Formula: HC≡CCOOH MW: 70.05 Melting Point: 16-18° Boiling Point: 102°/200 mmHg Flash Point: 58°C (136°F) …