Difluorochloromethane (R22) 1. Molecular Formula: CHCLF2 Commodity Code: 29034910 Danger Code: 1018 Danger Class: 2.2 2. Physical Properties: Molecular Weight86.48Boiling Point, °C-40.82Relative Density(30°C), liquid, g/cm3 1.177Melting Point, °C-160.00Critical Temperature, °C96.15Critical Pressure, MPA4.75Ozonosphere Damage Potency(ODP)0.045Global Warming Potency(GWP)1700Freezing point 30°C -Specific heat of liquid 30°C , [KJ/(Kg·°C)]0.31Density of saturated liquid 30°C , (g/cm3 )1.174Specific heat of e quipressure vapor(Cp) , 30°Cand 101.3kPa[KJ/(Kg·°C)]0.16Critical density , g/cm30.526Vaporization heat below boiling point , KJ/Kg233.53. Quality Index (GB7373-87) GradeExcellent GradeFirst GradeQualifiedPurity, %≥99.899.599.0Moisture, % ≤0.0010.0020.005Acidity(as HCl), %≤0.000010.00010.0001evaporation residue, %≤0.010.010.02