R600a
R600a, also known as butane is commonly used in small refrigeration systems, such as refrigerators and freezers
R600a, also known as isobutane, is a hydrocarbon refrigerant gas that is commonly used in small refrigeration systems, such as refrigerators and freezers. It is a colorless, odorless gas that is non-toxic and has a low Global Warming Potential (GWP), which makes it an environmentally friendly alternative to some other refrigerants. Isobutane has a high cooling capacity and energy efficiency, which has made it a popular choice for domestic refrigeration systems. However, it is highly flammable, which can be a safety concern if not handled properly. Despite this, R600a has been widely adopted in Europe and other regions as a replacement for older refrigerants with higher GWP.
General Information
- Isobutane
Linear Formula
- C4H10
Refrigerant Class
- HC
ASHRAE Number
- R-600a
Substitutes
- R-290 (propane), R-1270 (propylene), R-441A
Physical Properties
- 58.12 g/mol
Boiling Point
- -11.7°C
Freezing Point
- -134.7°C
Critical Temperature
- 134.7°C
Vapor Pressure
- 3.64 MPa (25°C)
Vapor Density
- 1.86 (air = 1.0)
Relative Density
- 0.55 g/cm³ (liquid at 25°C)
Water Solubility
- 0.029 g/L (25°C)
Evaporation Rate
- 3.6 (butyl acetate = 1.0)
Environment
- Highly flammable
Flammability Range
- 1.8 – 8.4% (in air)
Flash Point
- -49°C
Global Warming Potential (GWP)
- 3
Ozone Depletion Potential (ODP)
- 0
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