304 stainless steel resistance to hydrochloric acid concentration and sodium hypochlorite concentration
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This post was last edited by Dai Zi Feng on 2019-5-20 at 14:42. Request for help: Hello, experts! During the testing process, difficult-to-remove pigments and precipitates were encountered; it was necessary to first use hydrochloric acid and then sodium hypochlorite to soak and clean the reaction vessel. Since the reaction vessel is made of 304 stainless steel, and research shows that this material has poor resistance to acids and chloride ions, I am seeking advice from experts in this field: what concentration should be used and for how long should the cleaning process take in order to minimize corrosion of the equipment? {:3_63:}{:3_63:}{:3_63:}
Can sulfuric acid + hydrogen peroxide work?
Thank you, I’ll give it a try to see how it works{:3_63:}
Is it effective? I’ll learn it too*
Use sulfuric acid and hydrogen peroxide with caution; it’s not a process-related issue, but rather a corrosion problem with 304 steel. The additive film corrosion inhibitor based on hydrochloric acid and hypochlorous acid yields better results, but it needs to be used for a short period of time; after that, it should be washed away with deionized water