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D-61250 Usingen
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eMail: info@metakem.de

Gold compounds

Formula	Designation	Form (wt / %)	Usage
HAuCl4	Tetrachloroauric acid	Solution up to 40 % Au	Pre-product for Au chemicals.
HAuCl4 x H2O		Crystals up to 52 % Au Salts with ammonium, sodium and potassium
(NH4)3Au(SO3)2	Ammoniumgold(I)sulphite	Solution with 100 or 200 g Au / l	Electroforming hollow jewellery, dentistry, micro-structures. Plating of spectacles and watches. Non cyanidic = non-poisonous.
K3Au(SO3)2	Potassiumgold(I)sulphite	Solution	Same as above.
Na3Au(SO3)2	Sodiumgold(I)sulphite	Solution [Note : Ammonium, sodium and potassium goldsulphites are free of chlorine very stable – no gold-reduction due   to UV light!]	Same as above.
KAu(CN)4	Potassiumtetracyanoaurate(III) nickel.	Salt with 57.9% Au	Direct electro-gilding of stainless steel and

Semifinished products
(with 14, 18, 22 and 24 ct Au)
Wires, foils, strips, platesand tubes. Please ask if other shapes desired.