Original Date: 06/02/1997
Revision Date: 01/18/2007
Information : Innovative Chromate Reduction
Chromium has been identified as a particularly toxic metal. As a result, environmental and safety concerns have increased in regard to chromium usage and employee exposure. In the plating industry, chromium is typically used in its hexavalent form since it produces quality results and allows the metal to be plated out of solution. However, Sharretts has successfully changed to chromium’s more benevolent form, trivalent, for most of its chromium requirements.
By using the trivalent form, Sharretts has reduced the total chromate concentration in its waste water stream, and can save on chemical costs (e.g., sulfuric acid, sodium metabisulfite) by bypassing the section of the waste water system where the chromium hexavalent is chemically treated. During the plating process, this section can still be used if a customer requests a chromium hexavalent finish. Sharretts uses the trivalent form in 95% of its chromium-plating work.
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