| 摘要 |
PURPOSE:To improve stability of powdery composition containing iron compound, by adding an L-ascorbic acid compound, an erythorbic acid compound and an oxycarboxylic acid compound, etc., to bivalent iron compound powder. CONSTITUTION:Powder of a bivalent iron compound such as FeSO4 is compounded with one or more kinds of stabilizers selected from L-ascorbic acid compound, erythorbic acid compound, oxycarboxylic acid compound and oxocarboxylic acid compound and the mixture is dissolved in water to obtain an aqueous solution. The amount of the stabilizer is about >=0.5wt%, preferably about 0.5-20% based on iron in the bivalent iron compound. The stability of bivalent iron compound can be improved by the composition. 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. |
