| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an acidic aqueous composition for tin plating, capable of preventing the occurrence of twist in a resulting plated product while suppressing the influence on cost. <P>SOLUTION: The acidic aqueous composition for tin plating includes: a water-soluble tin-containing substance; at least one surfactant selected from the group consisting of a nonionic surfactant and an ionic surfactant having a polyoxyalkylene group; a glossy component including an aromatic carbonyl compound; and a glossy aid including a pyridine derivative in which at least one of 2-position and/or 4-position is substituted by an electron-withdrawing group. <P>COPYRIGHT: (C)2013,JPO&INPIT |
