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HFC-125 (Pentafluoroethane)
Identification
Synonyms: 1,1,1,2,2-Pentafluoroethane (IUPAC); Hydrofluorocarbon 125; R-125; FC-125; ECARO-25; FE-25; NAF S 125
De: Pentafluorethan ES: Pentafluoroetano Fr: Pentafluoroéthane
CAS No.: 354-33-6 EC No: 206-557-8 RTECS No.: KI6365000
Molecular Weight: 120.022
Molecular Formula: C2HF5
Structural Formula:
b.p. (1 atm): -48.45°C
m.p.: -103°C
ODP: 0
GWP: 3400 (CO2=1)
Chemical and Physical properties: Stable in normal condition, HFC-125 is odorless, colorless, electrically non-conductive, non-corrosive, and leaves no residue
Preparation
HFC-125 (pentafluoroethane) is made by process of gas-phase fluoridation between perchloroethylene (PCE) and hydrofluoric acid (HF). The intermediates of reaction are HCFC-123 and HCFC-124
Application
1) With zero ODP, HFC-125 is mainly used as a component of azeotropic blend refrigerant such as R-404a, R-407a, R-407b, R-407c, R-407d, R-410a and R410b (for more information, please see …).
2) HFC-125 is also used in clean agent fire suppression system in enclosed space with situations where water from a fire sprinkler would damage expensive equipment or where water-based fire protection is impractical, such as museums, banks, clean rooms and hospitals. It is altenative for CFC-502, Halon-1211 and Halon-1301
Specification*
| Parameters | Specification |
|---|---|
| HFC-125 purity | 99.8% min |
| moisture | 10 ppm max |
| Acidity as (HF) | 1 ppm max. |
| Evaporation residues | 0.01%max |
| Visible foreign substance | no |
Standard Packaging
780kg/steel cylinder; ISO Tank
Risks and Safety Information
UN 3220. Class 2.2 PG unknown
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Do not heat above 52°C (125°F).
For other information, please see MSDS