Carbon monoxide?
Answer:
It is used in some metal processing from ore, but is deadly and accumulative in your blood. It is present in exhaust from internal combustion engines and is colorless, odorless and tasteless .
It is a deadly poisonous gas with no obvious uses. Nobody sells it!
Sorry but you're out of luck.
Scientific supply house or welding supply. Cost depends on quantity and purity, plus cylinder cost or rental. They won't let you have it.
Aldrich Chemical Co., Milwaukee, Wis., sells a 50-L tank for $152.50. They don't specify the pressure in their catalog, but I imagine 2000 p.s.i.g.
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