Adding Cobalt Sulfate to nickel-plating baths makes treated metals brighter, harder, more ductile and smoother. The mineral also produces red tints in pottery and porcelain glazes and helps to dry and fix inks on lithographic prints.
Food and Drug Uses
Brewers once used Cobalt Sulfate to prolong the life of beer foam, and ranchers have dosed livestock with cobalt sulfate or used fertilizer enriched with cobalt sulfate to ensure their animals get enough of the trace mineral needed to produce vitamin B12. Also, until recently, cobalt sulfate had a therapeutic role in treating certain forms of anemia.
Health Risks
Long-term or repeated eye and skin exposure to cobalt sulfate can cause irritation, a rash and redness that will fade when such exposures end. Inhaling cobalt sulfate dust over an extended period, which is a possibility in manufacturing settings where the powdered mineral is used, can lead to poisoning and might cause cancer.
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