Achtzehnmorgenweg 3
D-61250 Usingen
Fon: +49 - 6081 - 10 60 - 0
Fax: +49 - 6081 - 10 60 - 60
eMail: info@metakem.de

Gold Bath (sulfite based)

Applications and attributes

• Sulfite pure gold bath for dentistry and jewellery

  • electroforming of inlays, crown and bridges

  • electroforming of hollow jewellery out of pure gold

  • electroforming of pure gold micro-structures

• very stable even under daylight as almost chloride-free

• pure gold deposits of 99,99 %

• dense, ductile and pure gold

Sulfite reduces gold halide complexes even under daylight, thus the gold sulfite complex is desired almost free of halide (Cl, Br, etc.). Our bath is based on ammoniumsulfitegold(I), but we can also easily deliver bathes with sodium and potassiumsulfitegold(I). They all contain less than 1.5 mg Cl - / 100 g Au and are stable for very long periods, if stored sealed against oxygen.

The sulfite gold bathes deposit very pure and dense gold.

	Optimum	Range
Bath-concentrate	10 - 15 g Au / l	15 -12 g Au / l
pH		7,5, range
Temperature	60 °C	55 - 65 °C
Agitation	2 m/s	0,5 - 4 m/s
Current density, cathodic	1 A/dm²	0,1 - 1,5 A/dm²
Anodes	MoxTi or PtTi (mixed oxides activated or platinised titanium)
Replenished	replenisher of Metakem
Coating-rate	100 microns / hour

Please discuss your application with us.