Black Ruthenium Electrolyte

For black decorative coatings - ideal as a perfect final finish


RUTHUNA® 479 Black is the perfect final finish for dark to black surfaces for decorative applications. The black ruthenium electrolyte is strongly acidic and has a long lifetime. It is easy to operate and primarily used for rack plating.

Depending on the degree of blackening, the abrasion resistance of the layers is good to very good. Applying a strike gold layer as an undercoat is strongly recommended. If palladium-nickel or palladium are used as undercoats, strike gold plating will partly not be necessary.

RUTHUNA® 479 Black is suitable for many decorative applications, for instance in the jewellery, bathroom fittings, spectacle frame and writing utensils industries.

Your advantages:

  • For perfect decorative dark to black final finishes
  • Degree of blackening adjustable
  • Good colour constancy
  • Strongly acidic electrolyte with long lifetime
  • Simple bath maintenance
  • Good to very good abrasion resistance
  • Suitable for rack and barrel
Jewellery coated with AURUNA<sup>®</sup> 500, combined with RUTHUNA<sup>®</sup> 479 Black.

Jewellery coated with AURUNA® 500, combined with RUTHUNA® 479 Black.


  • Accessories
  • Bathroom fittings
  • Spectacle frames
  • Jewellery
  • Writing implements
  • Watches
  • Car interiors
  • Shop furnishings