HFC-125 Specification

Download HFC-125 SpecificationHFC-125 Main
12001 Oak Knoll Dr Suite 8
Austin, TX 78759
Fire Extinguishing Agent WAYSMOS
HFC-125 Specification
Chemical Name: 1,1,1,2,2-Pentafluoroethane
ItemShanghai WaysmosNFPA 2001
AppearanceColorless liquefied gasColorless liquefied gas
Assay by GC99.8%(min)99.0%(min)
Moisture10 ppm(max)10 ppm(max)
Acidity as HF1ppm(max)3 ppm(max)
Non-volatile Residue0.01g/100ml(max)0.05g/100ml(max)
Clean and insulative
Good efficient and no residue
No depleting ozone layer in atmosphere
An environment acceptable replacement for Halon 1301
Empirical FormulaCF3-CHF2
CAS Number354-33-6
Molecular Weight120.02
Boiling Point-48.5°C
Freezing Point-103°C
Vapor Pressure(25°C)1310KPa
Liquid Density(25°C)1.19Kg/L
Critical Temperature66.3°C
Critical Pressure3595KPa
Critical Density572Kg/m3
Extinguish Concentration ( Cup)8.7%
NOAEL (V/V)7.5%
LOAEL (V/V)10%
LC50 or ALC (V/V)>70%
Ozone Depleting Potential0
Atmospheric Lifetime29 years
Gas Filling Curve
Isometric diagram of HFC-125 pressurized with N2 to 24.82 bar, gauge at 22°C.
HFC-125 is an environment acceptable replacement for Halon 1301. It is used in total flooding applications for protecting particularly high value assets, where water, dry chemicals and others can cause collateral damage to assets. Examples of the applications include semiconductor manufacturing facilities, chemical storage rooms, petrochemical facilities and so on.