electroless gold plating bath of acid

BATH GILDING AQUEOUS ACID STABILIZED CONTAINING COMPLEX aurous dicyano-1, A TRAINING COMPLEX, A REDUCING AGENT AND ADDITIVES USUAL FOR DEPOSIT BY GALVANIC GOLD ON GOLD OR LESS PRECIOUS METALS AS GOLD, AND ON THESE METAL ALLOYS. EC BATH IS CHARACTERIZED IN THAT IT CONTAINS AS REDUCING SALT OF hYDROXYLAMINE OR DERIVATIVE hYDROXYLAMINE AND AS STABILIZING FLUORIDE OR hydrogen-FLUORIDE.