R50 (methane)
R-50 refrigerant, also known as R50, Chinese name methane, English name methane, molecular formula CH4. R50 belongs to hydrocarbon refrigerants - it has no damage to the ozone layer and has a very small greenhouse effect, making it an environmentally friendly refrigerant today. From an environmental perspective, almost all countries in the world have no restrictions on the initial installation and use of R50 refrigerant in new refrigeration equipment, as well as in after-sales maintenance processes.
Application
R50 refrigerant methane is mainly used to replace R13 and R503 refrigerants in low-temperature or ultra-low temperature refrigeration equipment; Due to its flammability, R50 is usually only used in low-temperature refrigeration equipment with low liquid filling, or as a component of low-temperature mixed refrigerants; R50 is compatible with traditional lubricants.
Physical and Chemical Properties
Name:R-50、HC-50 | Chinese name:Methane; Biogas; Methyl hydride; liquefied methane Full Name:methane |
Chemical formula | CH4 |
Normal boiling point | -161.5℃ |
Critical temperature | -82.6℃ |
Critical pressure | 4.6MPa(Absolute pressure) |
Critical density | 163kg/m3 |
Density | 0.5547(air=1) |
Odp(ODP) | 0 |
Gwp(GWP,100 yr) | 23 |
Combustion | Combustible |
Quality index
Purity | ≥99.9% |
Boiling point(1atm/℃) | -161.483 |
Water content | <10ppm |
Sulfur | <1ppm |
Refrigerant packaging
Net weight: 1 kilogram (reusable 10L steel cylinder)
Net weight: 5 kilograms (reusable 40L steel cylinder)

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