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Sulfur Dioxide - ( SO2 )
Sulfur Dioxide is a colorless , nonflammable, irritating gas with a suffocating odor . It is readily liquefied and is shipped as a liquefied gas in steel cylinder under its own vapor pressure
| Specifications | |
| Purity , % | 99.99 |
| Oxygen | ≤ 50 ppmv |
| Nitrogen | ≤ 200 ppmv |
| Sulfur Trioxide | ≤ 50 ppmv |
| Water | ≤ 100 ppmv |
| Residue | ≤ 0.04 % |
| Ship | |
| DOT Shipping Name | Sulfur Dioxide, Liquified |
| DOT Classification | 2.3 |
| DOT Label | Poison Gas |
| UN Number | UN 1079 |
| CAS No. | 7446-09-5 |
| CGA/JIS/BS341/DIN477 | 660/W22-14R/NO.10/NO.7 |
| Shipped as | Liquefied Gas |
| Technical Information | |
| Cylinder State @ 21.1°C | Liquid |
| Flammable Limits In Air | Non-flammable |
| Auto Ignition Temperature (°C ) | - |
| Molecular Weight (g/mol) | 64.063 |
| Specific gravity (air =1) | 2.249 |
| Critical Temperature ( °C ) | 157.65 |
| Critical Pressure ( psig ) | 1127.3 |
| Applications | |
| · As a component in calibration gas mixtures for environmental monitoring systems . · In various chemical reactions. | |