反应详情

温度

25 °C

50 ml of purified water and 20 ml of ethylene glycol were added to 8 g of anhydrous copper acetate (manufactured by Wako Pure Chemical Industries, Ltd.). Thereto was added 2.0 ml of 64 wt % hydrazine hydrate while stirring at room temperature of 25° C. so as to give a molar ratio of hydrazine to copper acetate of 0.9, thereby to carry out the reaction to obtain a precipitate of cuprous oxide. The average primary particle diameter and the average secondary particle diameter were 10 nm and 350 μm, respectively. The average secondary particle diameter in the colloidal dispersion, obtained in the same manner as in Example 1, was 45 nm.