【Physical properties】
Molecular formula: C₄H₈O
Structural formula:

Molecular weight: 72.10
Specific gravity (20/4°C)0.81g/mL 
Boiling point (°C): 79.6
Flash point (°C): -9
Appearance: colorless transparent liquid. with acetone-like smell
【Sales index】≥99.5%
【Packing】165KG/drum, metal pail
【Dangerous level】3.2
【CAS#】 78-93-3