Hydrogen
131Hydrogen purifier — A hydrogen purifier is a device to purify hydrogen, the ultra high purified hydrogen is needed for applications like PEM fuel cells . Different methods are used but the most promising technique for removing unwanted contaminants uses dense thin… …
132hydrogen cyanide — a colorless poisonous gas, HCN, having a bitter almondlike odor: in aqueous solution it forms hydrocyanic acid. [1880 85] * * * ▪ chemical compound also called formonitrile (HCN) a highly volatile, colourless, and extremely poisonous… …
