GOLD SULFITE SALT AQUEOUS SOLUTION FOR GOLD PLATING SOLUTION

摘要

PROBLEM TO BE SOLVED: To provide an electroless gold plating solution or electrolytic gold plating solution having excellent running stability, and to provide a gold sulfite salt aqueous solution for gold plating solution for obtaining gold plating solution having excellent running stability.;SOLUTION: A gold sulfite salt aqueous solution includes a gold sulfite salt obtained by a method including a step of adding a sulfite salt to gold hydroxide in a state of being suspended in water to react the sulfite salt with the gold hydroxide, and a sulfite sa and has a particle increment ratio of 20% or less measured through stationary storage at 20°C for 24 hr.;COPYRIGHT: (C)2014,JPO&INPIT