Formula: CH₂=CHCH=CH₂ Formula Weight: 54.09 CAS No.: 106-99-0 UN Number: UN1010 Purity: ≥99% Density: 0.62g/mLat 20°C(lit.) General description: May contain up to 4% dimer impurity. Storage: 2-8°C Packaging: 100, 400 g in Sure-Pac™