Perfluorobutyl iodide CAS:423-39-2 Molecular Formula :C4F9I Molecular weight :345.93 Melting point : -88 °C Boiling point: 66-67 °C Flash point: 18.7°C Density : 2.01 g/mL at 25 °C(lit.) refractive index: n20/D 1.3285(lit.) vapor pressure : 158mmHg at 25°C