| abstract |
The present invention is to provide a non-cyanide electroless gold plating solution free of cyanide compounds, as a gold complexing agent,n n n X- (CH 2 ) n -SHn n n Where n is 2 or 3, X is SO 3 H or NH 2 , and the pH value is 7 or less)n n n It includes a compound or salts thereof represented by. The present invention also provides an electroless gold plating process using a non-cyanide electroless gold plating solution.n n n n Electroless, plating, complexing agents, compounds, salts, pH |