R50 (methane) is a deep-cryogenic natural refrigerant with a boiling point of -161.5℃. It is used in sub -160℃ cascade refrigeration, LNG liquefaction and natural-gas process cooling.
| Chemical Name | 甲烷 |
|---|---|
| Molecular Formula | CH₄ |
| Molecular Weight | 16.04 |
| Boiling Point (101.3 kPa) | -161.5 ℃ |
| Critical Temperature | -82.6 ℃ |
| Critical Pressure | 4.60 MPa |
| ODP (Ozone Depletion Potential) | 0 |
| GWP (Global Warming Potential) | 25 |
| ASHRAE Safety Class | A3（易燃） |
| Appearance | 无色透明、无浑浊 |
|---|---|
| Purity | ≥ 99.9 % |
| Moisture | ≤ 10 ppm |
| Acidity (as HCl) | ≤ 1 ppm |
| Evaporation Residue | ≤ 0.01 % |
| Executing Standard | 符合国家标准及行业标准 |
※ Packaging specs and labels can be customized; bulk orders can be delivered by tank truck.
R50 is an A3 highly flammable fluid with a very low boiling point. Design per flammable cryogenic codes with explosion protection and ventilation, operated by professionals.
| Storage & Transport | Store in a cool, ventilated, explosion-proof warehouse away from fire and heat; temperature not above 52℃. Strictly separate from oxidizers. Inspect cylinders periodically and handle gently. |
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