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聚焦于高纯气体，稳定同位素，金属化合物和高纯化学品等化工新材料的供应和销售
Oxygen-( O2 )
Oxygen is a colorless, odorless, highly oxidizing gas. Oxygen should not be permitted to contact oil , grease or other combustible materials.
| Specifications | |||
| Purity , % | 99.995 | 99.999 | 99.9997 |
| Argon | ≤1.0 ppmv | ||
| Nitrogen | ≤25.0 ppmv | ≤5.0 ppmv | ≤1.0 ppmv |
| Carbon Dioxide | ≤0.5 ppmv | ≤0.1 ppmv | ≤0.1 ppmv |
| Carbon Monoxide | ≤0.5 ppmv | ≤0.1 ppmv | ≤0.1 ppmv |
| THC ( CH4) | ≤0.5 ppmv | ≤0.1 ppmv | ≤0.1 ppmv |
| Water | ≤2.0 ppmv | ≤0.5 ppmv | ≤0.1 ppmv |
| Argon | ≤3.0 ppmv | ≤3.0 ppmv | |
| Hydrogen | ≤1.0 ppmv | ≤0.1 ppmv | ≤0.1 ppmv |
| Ship | |||
| DOT Shipping Name | Oxygen Compressed | ||
| DOT Classification | 2.2 | ||
| DOT Label | Non-flammable Gas | ||
| UN Number | UN 1072 | ||
| CAS No. | 7782-44-7 | ||
| CGA/DISS/JIS/BS341/DIN477 | 540/714/W22-14R/NO.3/NO.9 | ||
| Shipped as | Compressed Gas | ||
| Technical Information | |||
| Cylinder State @ 21.1°C | Gas | ||
| Flammable Limits In Air | Non-flammable | ||
| Auto Ignition Temperature (°C ) | - | ||
| Molecular Weight (g/mol) | 31.999 | ||
| Specific gravity (air =1) | 1.105 | ||
| Critical Temperature ( °C ) | -118.57 | ||
| Critical Pressure ( psig ) | 714.4 | ||
| Applications | |||
|
· As a component in calibration gas . · In first-aid treatment of emergencies such as suffocation and heart attack . · In the treatment of patients with respiratory disorders . · In anaesthesia . · In chemical oxidation reaction studies . · In semiconductor fabrication, chemical vapour deposition of silicon dioxide . · In semiconductor fabrication, thermal oxide growth . · In semiconductor fabrication, plasma etching . · In semiconductor fabrication, plasma stripping of photoresist . · In semiconductor fabrication, carrier gas in certain deposition/diffusion operations. | |||