PROBLEM TO BE SOLVED: To obtain a solution including copper ions by adding easy-to-use substances and water to a poorly-soluble copper compound for dissolution.SOLUTION: Cupric hydroxide or cupric oxide, equal to double amount of ammonium salt by a weight ratio to the cupric hydroxide or cupric oxide and 5-10 times amount of sodium hydrogensulfate by a weight ratio to the cupric hydroxide or cupric oxide are mixed with each other. To the mixture, 2-10 times amount of water to the solid total weight of the mixture is added and the total amount is dissolved.COPYRIGHT: (C)2013,JPO&INPIT【課題】難溶性の銅化合物に、取り扱い容易な物質と水とを加えて溶解させて銅イオンを含む溶解液を得る。【解決手段】水酸化第二銅又は酸化第二銅と、前記水酸化第二銅又は酸化第二銅に対する重量比で等量から2倍量のアンモニウム塩と、前記水酸化第二銅又は酸化第二銅に対する重量比で5~10倍量の硫酸水素ナトリウムと、を混合し、前記混合物に、この混合物の固体総重量に対して2~10倍量の水を加えてこれらの全量を溶解させる。【選択図】図1
