F 1338 (OTTO) Ferric oxide, 99% Cas 1309-37-1 - used in thermalite. Iron oxide is a low cost, nontoxic, ecofriendly catalyst for various reactions such as the oxidation of carbon monoxide, reduction of nitrogen oxides and sulfur dioxide by CO, photocatalytic splitting of water, Fischer-Tropsch synthesis of hydrocarbons, catalytic decomposition of industrial dyes, water-gas shift reactions, nucleation of diamonds, conversion of phenolic and other environmentally harmful aromatic compounds, dehydrogenation of ethylbenzene to styrene and catalytic oxidations of various organic compounds. F 1338 (OTTO) Ferric oxide, 99% Cas 1309-37-1 - used in magnetic storage devices and in the production of iron, steel and alloys. It functions as a catalyst in the chemical oxidation of hydrogen peroxide used for the treatment of contaminated water with hydrogen peroxide.