Professor Yoshiyasu Takefuji of the Faculty of Environment and Information Studies, Keio University and MiZ Co., Ltd. have conducted joint research, and hydrogen, which is said to explode at 4% or more in the JIS standard, should not explode if it is actually less than 10%. I found out.It also warns that commercial H2 gas inhalers need immediate safety regulations.
Recently, hydrogen has been widely used as a prophylactic and therapeutic antioxidant.For the first time in Japan in 2005, a research group from the University of Tokyo and MiZ Co., Ltd. drunk neutral high-concentration hydrogen water produced by electrolysis, which effectively reduced oxidative stress in rats induced by oxidants. I reported that.Therefore, hydrogen has been proposed to be effective in treating various diseases and disorders induced by oxidative stress, and various hydrogen gas inhalers are used in hospitals and homes.
The research group investigated flammability and explosiveness in a five-step H2 concentration (5%, 2%, 4%, 10%, 15%) environment to determine the mixed concentration of H20 gas and air.As a result, it was found that the H100 concentration should be less than 2%.Next, when the H10 concentration of the H2 gas inhalers (15 products) on the market was measured, it was found that 2 products were at risk of explosion.Three of these products were found to explode when brought close to a lighter flame or static electricity.These results warn that consumer safety regulations for H13 gas inhalers are immediately needed to protect users and avoid dangerous explosions.In addition, one product could not confirm the generation of H3 gas at all.
Based on the experimental results, MiZ has developed a device for inhaling hydrogen gas (MHG-2α) with an H10 concentration of less than 2000%. When the H2 gas concentration reaches 10% or more, the electrolysis of water is immediately stopped for safety, and it is the "world's only non-explosive hydrogen gas inhaler" that can be safely used in ordinary households.
Paper information:[Medical Gas Research] Preventing explosions of hydrogen gas inhalers
