UMICORE / RHODUNA®
Umicore RHODUNA® J1
Light-toned, brilliant white rhodium electrolyte for jewellery, watches and spectacle frames.
Estimate for a 100 ml product containing 2 g Rh. Includes 20% VAT.
Brilliant White Rhodium
Product Description
RHODUNA® J1 produces a brilliant white decorative finish with good throwing power and low porosity. It can be deposited directly on silver, gold, copper and copper alloys, as well as nickel and nickel alloys.
- Crack-free coatings in the 0.1–0.3 µm range
- Suitable for rack and barrel plating
- Good deposition rate and throwing power
Applications: Jewellery, watches and spectacle frames.
Technical Specifications
- Electrolyte type
- Strongly acidic
- Rhodium content
- 2 (1.6–2.4) g/L Rh
- pH
- < 1
- Operating temperature
- 35 °C (20–40 °C)
- Current density
- 1 A/dm²
- Deposition rate
- 0.025 µm/min at 1 A/dm²
- Deposit purity
- 99.99% Rh
- Colour and brightness
- Brilliant white
- Hardness
- Approx. 800–900 HV
- Maximum thickness
- Approx. 0.3 µm
- Anode
- Pt/Ti or MMO · PLATINODE® 187
Source: Umicore · 31 March 2025. Working bath values may differ from the concentrate content in the bottle. Refer to the manufacturer’s latest technical data sheet for product selection and operating conditions.
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