Sn replenishing material for plating liquid, method for producing Sn replenishing material for plating liquid, and method for replenishing Sn into plating liquid

摘要

To provide an Sn replenisher for plating solution with an excellent storage stability that is hardly dispersed when being thrown into plating solution, the production method thereof, and an Sn replenishing method to plating solution.SOLUTION: An Sn replenisher for plating solution comprises a frozen body of a hydrous substance that includes water and stannous oxide powder and has a water-content rate of over 10 weight percent. The Sn replenisher for plating solution can be produced using a method of cooling and freezing a hydrous substance that includes water and stannous oxide powder and has a water-content rate of over 10 weight percent. In the Sn replenishing method to plating solution, the Sn replenisher for plating solution is thrown into the plating solution.SELECTED DRAWING: None