Isobutane R600 refrigerant gas Purity 99.5% Molecular Formula C4H10 Molecular Weight 58.12 Moisture (ppm) 20 Sulfur (ppm) 1 Acidity (ppm) 1 Vapor Residue (ppm) 100 Appearance Colorless NANJING ZL ENERGY CO.,LTD. specialize in Isobutane R600a, Propylene, Ethane, Cyclopentane, 1-hexene and Isooctane, etc. We look forward to your inquiry if any needs. Asu (Ms.) Whatsapp/ Wechat/ Mo: 008615753036710 Email: zl@njzlny.com Odor Odorless Boiling Point () -11.7 Critical Temperature () 134.9 Critical Pressure (MPa) 3.65 ODP 0 GWP 3