Synonym(s): β-Isoamylene; Amylene Formula: CH₃CH=C(CH₃)₂ Formula Weight: 70.13 CAS No.: 513-35-9 UN Number: UN2460 Purity: ≥99% Density: 0.662g/mLat 25°C(lit.) Packaging: 100, 500 mL in Sure-Pac™