R-227ea
C₃HF₇R-227ea (1,1,1,2,3,3,3-heptafluoropropane, HFC-227ea) serves dual purposes as a refrigerant and a fire suppression agent (marketed as FM-200 or Solkaflam). In fire suppression, R-227ea is valued for its clean-agent properties—leaving no residue and safe for occupied spaces. As a refrigerant, R-227ea is used in specialized applications and as a component in some blends. With a GWP of 3,220, R-227ea faces regulatory pressure, though fire suppression applications may receive exemptions due to safety requirements. R-227ea is classified as A1 (non-toxic, non-flammable), making it safe for use in data centers, control rooms, museums, and other spaces where water-based suppression is unsuitable.
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Key Information
Essential safety and exposure information for R-227ea
Health Effects
Low acute toxicity. May cause cardiac sensitization at very high concentrations. Can cause asphyxiation by displacing oxygen.
Common Sources
- Fire suppression systems
- specialized refrigeration
- pharmaceutical applications
Exposure Limits
- WEEL
- 1,000 ppm (8-hr TWA)
- No OSHA/NIOSH limit
- No OSHA/NIOSH limit
- Based on R-227ea component
- Based on R-227ea component
Regulatory Status
- EPA Classification
- HFC (non-ODS)
- ASHRAE Safety Group
- A1 (low toxicity, non-flammable)
- GWP (AR5)
- 3,220
- ODP
- 0
- Fire Suppression
- Listed as acceptable under EPA SNAP for total flooding applications
- AIM Act
- May have essential use exemptions for fire suppression
Detection Requirements
- Sensor Technology
- Infrared (NDIR)
- Detection Range
- 0-1,000 ppm (leak monitoring) or 0-10% (fire suppression verification)
- Response Time
- <30 seconds (T90)
- Calibration Frequency
- Annual recommended
- Fire Suppression
- May require higher range sensors for system integrity monitoring
Detection Solutions
Sensors and detectors for R-227ea monitoring
cGas Detector VRF IR Refrigerant Transmitter
An aesthetic, non-dispersive infrared refrigerant gas detector for acute leak detection in modern energy-efficient buildings utilizing Variable Refrigerant Flow (VRF) HVAC systems.
cGas-SC Self-Contained Controller
A self contained controller with up to 3 gas channels, Plug & Play Smart Sensor Technology and configurable logic control and priority settings. Offers superior user customization and reliable gas detection performance for monitoring many gases.
cGas Detector IR Refrigerant Transmitter
Non-dispersive infrared refrigerant gas detector with accurate, low level leak detection, available with analog output or BACnet® or Modbus® output and Plug & Play Smart Sensor Technology.
FCS Multi Channel System Controllers
High performance controller with logic and priority settings for monitoring toxic, combustible and refrigerant gases with versatile control functionality. Available with Modbus® or BACnet® communication with BAS, supports 4-20 mA and Modbus® driven VFDs.