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Originally posted by K17STY
harry potter?

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Because the gas has a high density (six times more dense than air), it can be poured into open containers, like beakers and fishtanks. Moreover, light objects (e.g. made out of light wood or aluminium foil) can float on the gas.

According to the Intergovernmental Panel on Climate Change, SF6 is the most potent greenhouse gas that it has evaluated, with a global warming potential of 22,200 times that of CO2 over a 100 year period (for countries reporting their emissions to the UNFCCC, a GWP of 23,900 for SF6 is used as it was decreted at the third Conference of the Parties: GWP used in Kyoto protocol). However, because its mixing ratio in the atmosphere is lower than that of CO2 (about 4 ppt in 1990 versus 365 ppm), its contribution to global warming is accordingly low.

Sulfur hexafluoride can affect the sound of a person's voice if it is inhaled in small quantities. When SF6 is inhaled, the pitch of a person's voice decreases dramatically.

Although inhaling SF6 can be a novel amusement, the practice can be dangerous because, like all gases other than oxygen, the SF6 displaces the oxygen needed for breathing (a phenomenon known as asphyxiation). A myth exists that SF6 is too heavy for the lungs to expel unassisted, and that after inhaling SF6, it is necessary to bend over completely at the waist to allow the excess gas to "spill" out of the body. In fact, the lungs mix gases very effectively and rapidly, such that SF6 would be purged from the lungs within a breath or two. In general, dense, odourless gases in confined areas present the hazard of suffocation.

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