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Characteristics & Purposes
It is a colorless gas under ordinary temperatures and acolorless & transparent liquid under the pressure of itself,used as refrigerants, the vital part of mixed working substances tosubstitute CFC-502 & HCFC-22, and as flame-retardants tosubstitute Halon-1211 & Halon-1301.
Physical Characteristics
Index | Unit | HFC-125 |
Chemical formula |
| CHF2CF3 |
Molecular weight | g/mol | 120.02 |
Melting point | °C | -102.95 |
Boiling point | °C | -48.45 |
Specific gravity (25°C liquid) | g/cm3 | 1.245 |
Vapor pressure (25°C) | MPa | 1.371 |
Critical temperature | °C | 66.05 |
Critical pressure | MPa | 3.592 |
Critical density | g/cm3 | 0.571 |
Vaporization heat at boiling point | KJ/kg | 165 |
Water solubility (25°C) | w% | 0.09 |
Specific heat (25°C liquid) | KJ/kg•k | 1.26 |
ODP |
| 0 |
GWP |
| 2800 |
Specification
Index | Best quality | First-class |
Purity % ≥ | 99.8 | 99.5 |
Moisture % ≤ | 0.001 | 0.002 |
Acidity (as HCl) % ≤ | 0.00001 | 0.0001 |
Evaporation residue % ≤ | 0.01 | 0.01 |
Chlorides (Cl-)test % ≤ | 0.0003 | |
No condensable gas cubic fraction % ≤ | 1.5 | |
Packing: 760kg/800L, 870kg/926L steel cylindersor ISO TANK.
Refrigerant R125
