Is anaesthetic gas heavier than air?
Anaesthetic gases such as sevoflurane, desflurane and isoflurane, which are regularly used in clinical routine, are lighter than air. Nitrous oxide is 1.5 times heavier than air. Gases like chlorophorm, butane or propane are also heavier than air and sink to the ground. However, this only plays a role in private use, for example in motor homes.
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