RHODUNA® J1 Rhodium Electrolyte

RHODUNA® J1 Rhodium Electrolyte

Brilliant white rhodium electrolyte for decorative applications

RHODUNA® J1 deposits brilliant white, very light and bright surface finishes. This makes the electrolyte ideal for use in decorative applications, such as jewelry, watches or spectacle frames. Special features are its high deposition rate and excellent throwing power. Furthermore, RHODUNA® J1 deposits layers 0.1 - 0.3 μm thick without cracking.

Rhodium is deposited directly onto silver, gold, copper and copper alloys, nickel and nickel alloys. The electrolyte is suitable for rack and barrel plating.

Electrolyte characteristics

Electrolyte type

Strongly acidic

Metal content

2 (1.6 - 2.4) g/l Rh

pH value

< 1

Operating temperature

35 (20 - 40) °C

Current density range

1 A/dm²

Plating speed

0.025 μm/min at 1 A/dm²

Anode material

Pt-Ti (type PLATINODE® Pt/Ti) or MMO (Typ PLATINODE® 187)

Coating characteristics




99.99 wt.% Rh

Colour of deposit

brillant white



Hardness of deposit

approx. 800 - 900 HV

Max. coating thickness

approx. 0.3 μm


  • Extremely light and bright coatings
  • Good deposition rate
  • Low porosity
  • Excellent throwing power
  • Layers 0.1 - 0.3 μm thick without cracking
  • Suitable for rack and barrel plating


  • Jewelry
  • Watches
  • Spectacle frames
  • Writing utensils


  • Produktblatt-rhoduna-j1-en-screen-20190719.pdf

Your contact person

Markus Legeler

Manager Sales International
T: +49 7171 607 204
F: +49 7171 607 316

Find a representative in your region


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