Hydrogen cyanide, phosphorylation

Both hydrogen cyanide, HCN, and cyanide salts, are rapidly acting poisons. A dose of only 60-90 mg is sufficient to kill a human. Cyanide bonds to Fe in an iron-containing ferrocytochrome oxidase enzyme, preventing its reduction to Fe " " in the oxidative phosphorylation process, by which the body utilizes oxygen. The cmcial enzyme is inhibited because ferrocytochrome oxidase, which is required to react with O2, is not formed and utilization of oxygen in cells is prevented so that metabolic processes cease. 

The electrical conductivities of soln. of a great many compounds in liquid hydrogen halides have been measured by E. H. Archibald and D. McIntosh. The conductivity is raised considerably by phosphoryl chloride. Sodium sodium sulphide, borate, phosphate, nitrate, thiosulphate, and arsenate chromic anhydride potassium nitrate, hydroxide, chromate, sulphide, bisulphate, and ferro- and ferri- cyanide ammonium fluoride and carbonate j rubidium and caesium chloride magnesium sulphate calcium fluoride ... 

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