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REVIEW
Year : 2019  |  Volume : 9  |  Issue : 3  |  Page : 160-162

Preventing explosions of hydrogen gas inhalers


1 MiZ Company Limited, Kamakura, Kanagawa, Japan
2 Faculty of Environment and Information Studies, Keio University, Fujisawa, Japan

Correspondence Address:
Yoshiyasu Takefuji
Faculty of Environment and Information Studies, Keio University, Fujisawa
Japan
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2045-9912.266996

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Production and excretion of hydrogen (H2) gas in human was reported in 1969, since then it has been regarded as non-toxic molecule. For preventive and therapeutic medical uses, a possible treatment for cancer was reported and another article was published on how H2 acts as a therapeutic antioxidant by selectively reducing cytotoxic oxygen radicals. A variety of H2 gas inhalers have been available in the market for hospital and home uses. However, H2 is odorless and flammable or explosive ignited by static electricity. We have examined the safety of a variety of H2 gas concentrations from the viewpoint of flammability and explosion. We have also measured concentrations of H2 gas inhalers in the market respectively. This paper also details how to control H2 gas concentration for preventing explosions.


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