... etcPhysical Properties: Molecular Weight66.0Boling Point (°C)-24.7Relative density(30°C),liquid,g/cm30.901Vapor pressure at 25 °C0.599Critical Temperature ... heat 30°C , [KJ/(Kg·°C)]1.68Saturated liquid density 30°C , (g/cm3 )1.174Latent heat of vaporation at ... bp, KJ/Kg330.0Critical density, g/cm30.365 Quality Index: GradeExcellent GradeFirst GradePurity, %≥99.9599 ...