| 摘要 |
PURPOSE:To produce powder having excellent stabilization effect, by adding an erythorbic acid compound and an oxycarboxylic acid compound, etc., to a bivalent iron compound and drying and pulverizing an aqueous solution containing the above mixture. CONSTITUTION:A bivalent iron compound such as FeSO4 is compounded with one or more kinds of stabilizers selected from erythorbic acid compound, oxycarboxylic acid compound and oxocarboxylic acid compound and the mixture is dissolved in water to obtain an aqueous solution. The solution is dried and pulverized e.g. by a spray drier. The method enables long-term stabilization of an iron compound even in air. The powdery composition containing an iron compound is supported on various carriers and used in broad application field as a raw material of deodorizer, water-treating agent, mordant, etc. |
