Sulfur hexafluoride is a colorless, tasteless, odorless, and non combustible gas. Human beings have developed many SF6 circuit breakers and gas insulated switches by using the excellent insulation performance of sulfur hexafluoride gas. At the same time, SF6 gas also has outstanding performance in electromechanical and etching industries.

The interesting experiment of inhaling sulfur hexafluoride has been broadcast on TV before. In the experiment, people who inhaled sulfur hexafluoride did not have danger, but their voice became deep and rough. Why? Why does sulfur hexafluoride change its sound like helium? Can sulfur hexafluoride be poisoned by inhalation?

Pure sulfur hexafluoride is a safe and non-toxic gas, and inhalation of sulfur hexafluoride (a small amount) will not cause poisoning. However, if the SF6 gas used is impure and the product is doped with low sulfur fluoride and hydrogen fluoride, especially sulfur decafluoride, the toxicity will be enhanced.

However, it should be noted that although sulfur hexafluoride is non-toxic, it is indeed an asphyxiant gas. If a large amount of sulfur hexafluoride gas is inhaled in a short time, it will lead to hypoxia in the human body, and even lead to asphyxia in severe cases! If excessive inhalation of sulfur hexafluoride causes adverse reactions, it should be quickly removed from the site to fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately or seek medical advice in time.

The dielectric constant of high-purity sulfur hexafluoride does not change with frequency due to its high dielectric strength and excellent arc extinguishing performance. It is considered as non-toxic inert gas in pharmacology, but if the product is unqualified, it will cause poisoning when mixed with sulfur monofluoride, sulfur tetrafluoride, sulfur pentafluoride and other toxic gases. So sometimes when you hear the news of poisoning and medical treatment after inhaling sulfur hexafluoride, you should distinguish clearly that these people may be poisoned by inhaling impure SF6 gas.

The content of the article comes from sulfur hexafluoride: http://www.feiliergas.com