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Carbonyl Sulfide - ( COS )
Carbonyl sulfide is a colorless, poisonous, flammable gas with a distinct sulfide odor. The gas is toxic and narcotic in low concentrations and presents a moderate fire hazard. Under prolonged exposure to fire or intense heat the container may rupture violently or rocket.
| Specifications | |
| Purity , % | 99.8 |
| (Liquid Phase) | (Vol. PPM) |
| Oxygen & Nitrogen | ≤100 ppm |
| Moisture | ≤50 ppm |
| Carbon Disulphide | ≤100 ppm |
| Carbon Dioxide | ≤ 850 ppm |
| Hydrogen Sulfide | ≤ 300 ppm |
| Ship | |
| DOT Shipping Name | Carbonyl Sulfide |
| DOT Classification | 2.1 |
| DOT Label | Flammable Gas |
| UN Number | UN 2204 |
| CAS No. | 463-58-1 |
| CGA/BS341/DIN477 | 330/NO.15/NO.5 |
| Shipped as | Compressed Gas |
| Technical Information | |
| Cylinder State @ 21.1°C | Gas |
| Flammable Limits In Air | 12-29% |
| Auto Ignition Temperature (°C ) | |
| Molecular Weight (g/mol) | 60.07 |
| Specific gravity (air =1) | 2.1 |
| Critical Temperature ( °C ) | 105.65 |
| Critical Pressure ( psig ) | |
| Applications | |
| Carbonyl sulfide is used as an intermediate in the production of thiocarbamate herbicides. Carbonyl sulfide is a potential alternative fumigant to methyl bromide and phosphine. In some cases, however, residues on the grain result in flavours that are unacceptable to consumers, e.g. barley used for brewing. | |