Beta-Propiolactone [57-57-8] is a professionally supplied chemical reagent with the molecular formula C3H4O2 and a molecular weight of 72.06. It has a Boiling Point of 162.2 °C, decomposing, and a Melting Point of -32.8 °C. The hazard signal word for this substance is Danger due to its potential health risks, including causing skin irritation, being carcinogenic, and being toxic if swallowed.

• CAS Number: 57-57-8
• Molecular Formula: C3H4O2
• GHS Signal Word: Danger
• Molecular Weight: 72.06
• Boiling Point: 162.2 °C decomposes
• Melting Point: -32.8 °C
• Exact Mass: 72.021129366
• Vapour Density: 2.5
• Hazard Statements:
• H315: Causes skin irritation [Warning Skin corrosion/irritation]
• H350: May cause cancer [Danger Carcinogenicity]
• H227: Combustible liquid [Warning Flammable liquids]
• H301: Toxic if swallowed [Danger Acute toxicity, oral]