Finishing Talk Forums - The Online Surface Finishing Community - cyanide neutralizing after brass plating 2013-09-28T10:33:01Z PunBB http://www.finishingtalk.com/community/topic1641$2.html cyanide neutralizing after brass plating <p>Hi all,</p><p>Can anyone please tell me how to neutralize cynaide effect after brass plating from base metal iron pipe. I am facing a problem small brown spots occur after few days even after lacquer. It might be cyanide bleed out from small pores which can not be seen by naked eye.</p><p><br /></p><p>What will be the best way to remove it</p><p>- sulphuric acid( in what percentage)</p><p>- Citric acid</p><p>- 30% of hydrogen peroxide with sulphuric acid</p><p>- or any other way which can done in production basis</p><p><br /></p> kapoor1_1 2013-09-28T10:33:01Z http://www.finishingtalk.com/community/post3663.html#p3663