Synonym(s): Ethyl ethynyl ether Formula: C4H6O Formula weight: 70.09 CAS Number: 927-80-0 UN Number: UN1993 Hazard Class: 3 Packing Group: II Harmonized Tariff Code:  2909.19 Hazard Statements: H225-H304-H361-H373-H315 Highly flammable liquid and vapour. May be fatal if…

HC≡COCH₂CH₃ CAS#: 927-80-0 F.W.: 70.09 WARNING: Reported to undergo explosive decomposition if heated above its boiling point to 100°C. Requires refrigeration.