R-417A
R125/R134a/B…R-417A is an HFC refrigerant blend (R-125/R-134a/R-600 at 46.6/50/3.4%) developed as a drop-in replacement for R-22 in air conditioning applications. The small butane (R-600) content provides oil miscibility with mineral oils, potentially eliminating the need for oil change during retrofit. R-417A operates at slightly lower capacity and efficiency compared to R-22, often requiring system adjustments. With a GWP of 2,346, R-417A is subject to phase-down regulations. The blend has found use in retrofit applications where minimizing system modifications is the priority, though R-407C and R-422D are often preferred alternatives with better performance match.
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Key Information
Essential safety and exposure information for R-417A
Health Effects
Low toxicity. Contains small amount of flammable hydrocarbon component. May cause cardiac sensitization at high concentrations.
Common Sources
- Air conditioning retrofits
- heat pumps
- medium temperature refrigeration
Exposure Limits
- WEEL
- 1,000 ppm (8-hr TWA)
- No OSHA/NIOSH limit
- No OSHA/NIOSH limit
- Blend with R125/R134a
- Blend with R125/R134a
Regulatory Status
- EPA Classification
- HFC blend (non-ODS)
- ASHRAE Safety Group
- A1 (low toxicity, non-flammable)
- GWP (AR5)
- 2,346
- ODP
- 0
- AIM Act
- Subject to phase-down
- Use Case
- Drop-in R-22 retrofit with potential mineral oil compatibility
Detection Requirements
- Sensor Technology
- Infrared (NDIR)
- Detection Range
- 0-1,000 ppm typical
- Response Time
- <30 seconds (T90)
- Calibration Frequency
- Annual recommended
- Butane Content
- Contains 3.4% R-600 (butane) but classified A1 as blend
Detection Solutions Coming Soon
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