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Methane - (CH4 )
Methane is a colorless , odorless and flammable gas.
| Specifications | |||||
| Purity , % | 99.9 | 99.99 | 99.995 | 99.999 | 99.9999 |
| Oxygen | ≤50 ppmv | ≤10 ppmv | ≤5 ppmv | ≤1 ppmv | ≤0.25 ppmv |
| Nitrogen | ≤250 ppmv | ≤35 ppmv | ≤15 ppmv | ≤4 ppmv | ≤0.25 ppmv |
| Carbon Dioxide | ≤2 ppmv | ≤0.02 ppmv | |||
| Carbon Monoxide | ≤1 ppmv | ≤0.02 ppmv | |||
| Water | ≤50 ppmv | ≤10 ppmv | ≤5 ppmv | ≤1.0 ppmv | ≤0.5 ppmv |
| Ethane | ≤600 ppmv | ≤25 ppmv | ≤15 ppmv | ≤3 ppmv | ≤0.02 ppmv |
| Ethylene | ≤1 ppmv | ≤0.02 ppmv | |||
| Hydrogen | ≤50 ppmv | ≤10 ppmv | ≤5 ppmv | ≤1 ppmv | ≤0.02 ppmv |
| Propane | ≤1 ppmv | ≤0.02 ppmv | |||
| Propylene | ≤1 ppmv | ≤0.02 ppmv | |||
| Ship | |||||
| DOT Shipping Name | Methane, Compressed | ||||
| DOT Classification | 2.1 | ||||
| DOT Label | Flammble Gas | ||||
| UN Number | UN 1971 | ||||
| CAS No. | 74-82-8 | ||||
| CGA/DISS /BS341/DIN477 | 350/W22-14L/NO.4/NO.1 | ||||
| Shipped as | Compressed Gas | ||||
| Technical Information | |||||
| Cylinder State @ 21.1°C | Gas | ||||
| Flammable Limits In Air | 5–15.0 % | ||||
| Auto Ignition Temperature (°C ) | 580 | ||||
| Molecular Weight (g/mol) | 16.043 | ||||
| Specific gravity (air =1) | 0.555 | ||||
| Critical Temperature ( °C ) | -82.57 | ||||
| Applications | |||||
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In the manufacturing of calibration mixtures used in natural gas ，petrochemicals ， environmental applications. |
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