R50 Refrigerant Technical Data Sheet
Technical Data Sheet(TDS) Methane(Refrigerant R 50) CH₄ R50, and.
1 Product Identification
| Item | Value |
|---|---|
| Product Name | R50 Refrigerant |
| Chemical Name | Methane（Refrigerant R 50） |
| English Name | Methane（Refrigerant R 50） |
| Molecular Formula | CH₄ |
| Molecular Weight | 16.04 |
| CAS Registry Number | 74-82-8 |
| UN Number | 1971 |
| Transport Hazard Class | Class 2.1, flammable gas |
| ASHRAE Safety Classification | A3(Low toxicity, flammable) |
| Reference Basis | Manufacturer data; the batch COA governs |
Reference Basis: Compiled from manufacturer data (safety classification per GB/T 7778, ASHRAE 34 / ISO 817)
2 Physical & Chemical Properties
R50 Typicaldata, system and,.
| Item | Typical Value |
|---|---|
| Appearance | Colorless, transparent liquefied gas |
| Odor | Faint odour(Industrial gradeodorant) |
| Boiling Point (101.3 kPa) | -161.5 ℃ |
| Triple point temperature | -182.5 ℃ |
| Critical Temperature | -82.6 ℃ |
| Critical Pressure | approx. 4.60 MPa |
| Critical Density | approx. 163 kg/m³ |
| Vapor Pressure (25 C, absolute) | approx. 34.6 MPa |
| Liquid Density(-160 ℃, ) | approx. 380 kg/m³ |
| Latent Heat of Vaporization (at boiling point) | approx. 510 kJ/kg |
| Liquid Specific Heat(25 ℃) | approx. 2.25 kJ/(kg K) |
| Water Solubility(25 ℃) | Slightly soluble |
| Auto-Ignition Temperature | approx. 537 ℃ |
| Flammability Limits in Air (vol.%) | 5.0 % ~ 15.0 % |
| Minimum ignition energy | approx. 0.22 mJ |
| OEL (8 h TWA) | (perasphyxiation) |
| Ozone Depletion Potential (ODP) | 0 |
| Global warming potential (GWP) GWP(100 years) | approx. 25 |
| Atmospheric Lifetime | approx. 12 years |
3 Quality Specifications & Test Methods
R50 Parameter, Batch COA.
| Item | Parameter | Test Method |
|---|---|---|
| Appearance | Colourless and clear, free of suspended matter and mechanical impurities | Visual inspection |
| Purity | ≥ 99.50 % | Gas chromatography GC-FID |
| Moisture | ≤ 20 ppm | Karl Fischer coulometric method |
| Sulfur Content | ≤ 1 ppm | Microcoulometry |
| Evaporation Residue | ≤ 0.01 % | Gravimetric method |
| Non-Condensable Gas | ≤ 1.5 % | Gas chromatography |
| oxygen + nitrogen | ≤ 0.5 % | Gas chromatography |
4 Comparison with Common Refrigerants
| Comparison Item | R50(this product) | R170 | R23 |
|---|---|---|---|
| Composition | Single compound CH₄ | Single compound C₂H₆ | Single compound CHF₃ |
| Boiling point | -161.5 ℃ | -88.6 ℃ | -82.1 ℃ |
| Critical Temperature | -82.6 ℃ | 32.2 ℃ | 25.8 ℃ |
| ODP | 0 | 0 | 0 |
| GWP(100 years) | approx. 25 | approx. 6 | approx. 14,800 |
| ASHRAE Safety Classification | A3(Flammable) | A3(Flammable) | A1 (non-flammable) |
| Relative charge | Low(charging) | Low | Medium |
| Typical use | 120℃ and belowLow temperaturecryogenic | 80℃ and below cascadeLow temperature | pharmaceuticalcryogenic and Low temperaturetest chamber |
| Current selection | cryogenic and | cryogenic and | quotaphase-down |
5 Packaging Specifications
| Package Type | Specification | Filling Ratio | Valve Connection | Application |
|---|---|---|---|---|
| steel cylinder | 40 kg | ≤ 0.35 kg/L | W21.8-14 / QF-30(perorder) | testing and supply |
| steel cylinder | 400 kg | ≤ 0.35 kg/L | W21.8-14 | Itemsupply |
| Dewar flask | Made to order | Handle according to tank regulations | Standard tank connection | Low temperaturetesting and research |
| ISO ISO tank | Made to order | per ISO tank | ISO tankconnection | Transport |
Filling Ratioper"", steel cylinderper.
6 Applications
- 120℃ and belowLow temperature cascadesystem
- and cryogenic separationprocess
- Low temperaturechemicalprocess
- Low temperature and
Equipment Compatibility & Charging Advice
- R50 A3 Flammable refrigerant, systemperexplosion-proof: explosion-proof,, ventilation and Flammable.
- Critical Temperature -82.6 ℃ Low, steel cylinder,, Storage.
- chargingcryogenic, Spillage, leak detection and.
- and,, POE;system, and and refrigerant.
- and serviceexplosion-proofcharging, recovery and leak detection equipment, recoverynitrogen,.
7 Storage & Transport
- Storage,, ventilation, 30 ℃, ignition source, heat source and.
- steel cylinder, and,,, and.
- 2.1 class Flammable, perexplosion-proof equipment, Flammable and explosion-proofventilation.
- and oxygen,, Flammable, explosion-proof and.
- and, Low 0.05 MPa.
- Transportper Danger 2.1 class, Firefighting and, and.
8 Safety & Handling
- Flammability and explosion riskR50 A3 Flammable refrigerant, Explosive limits 5.0 % ~ 15.0 %, Flame, explosion-proof, ventilation.
- VapourR50 Vapour(Relative densityapprox. 0.55), Spillage, Low, and ventilation.
- Spillageignition sourceventilation,;explosion-proof and;explosion-proofleak detection.
- Firefightingor carbon dioxide Firefighting, steel cylinder. Spillage Flame,.
- Overpressure riskCritical TemperatureLow,,, Keep away from heat.
- frostbite and asphyxiationfrostbite;Vapouroxygenasphyxiation, oxygen ≥ 19.5%.
9 Quality Assurance & Shipping Documents
- Batch COA, Purity( or ), Moisture, Acidity and Evaporation Residue.
- Moisture, and Low temperature.
- 12 months, Batch, No. and.
- perthird-party test report(SGS / ), SDS Description REACH, RoHS.
10 Frequently Asked Questions
R50 Why isapplication？
Main: Critical Temperature -82.6 ℃, steel cylinder, Storage and Transport equipment; A3 Flammable refrigerant, 5 %, Vapour, Spillage,,. Main -120℃ and below cryogenic.
R50 R170 How to choose?
per. R50 Boiling point -161.5 ℃, Critical Temperature -82.6 ℃, -120℃ and below Low temperaturesystem and;R170 Boiling point -88.6 ℃, Critical Temperature 32.2 ℃, -80℃ and below cascadeLow temperature and,.
R50 GWP approx. 25 ？
refrigerant Medium--Propaneapprox. 3, Isobutaneapprox. 3, Ethane(Refrigerant R 170)approx. 6, Methane(Refrigerant R 50)Baseline, AR GWP approx. 25(AR4)/ 27(AR5)., and R134a 1,430, R22 1,810, controlled.
Disclaimer
Specificationdata Typical,;Parameter Batch COA. and, or or, equipment and Regulations.
Specificationdata Typical,;Parameter Batch COA. and, or or, equipment and Regulations.
| Reviewed by: | Approved by: | Hubei Zhongjin Fluorine Chemical Co., Ltd.
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