Black Chrome Food Contact: Cautionary Answer and Safer Options

Summary for black chrome food contact Discussion

black chrome coating for food contact is treated cautiously in this thread. Munish Kaushal asks whether black chrome plating on a component that may touch food is non-toxic and whether any testing standard exists. In reply, the answerer first asks whether the finish is black chrome from a hexavalent chrome bath or black passivation on zinc, noting that in either case the coating could be harmful if edible food is allowed to contact it. The reply adds that acidic foods may slowly dissolve the layer, so the finish should not be assumed safe for food contact without further qualification. As alternatives, the answerer suggests black gold if cost allows, or taking a deviation from the client and plating tin instead. No specific testing standard is identified in the thread.