Danger. I do not understand what the 15 percent is refering to. If it is a 15 percent solution of bleach with some KOH to stablize it as an alkaline pH, then read carefully. If you do not understand this chemistry, then DO NOT do the process. All this should be under a proper vent hood. Sodium Hypochlorite will release chlorine when pH is reduced.
Hypochlorite neutralization is a two step process. First the potential to release chlorine due to the lowering of the pH must be eliminated and then pH adjustment. Sodium sulfite, sodium bisulfite, hydrogen peroxide and sodium thiosulfate can be used to reduce hypochlorite; each with it own advantages and disadvantages. Things to consider are safe handling, application, cost, solid or liquid, reactivity and reaction products. A simple test to verify the hypochlorite has been reduced is to use drops of hydrogen peroxide. The mix will release oxygen bubbles if hypochlorite exists. Once the release of chlorine potential has been eliminated a weak acid such as muriatic acid can be used to adjust the pH if needed. A plan should have been created and approved by authority and material should already be a available to carry out the plan when the time comes.
how to neutralize and solution of 15% potassium hydroxide and sodium hypoclorite?
2 answers
A very thorough and complete answer by Bob P. Much better than one I might have given. Way to go Bob P.
0 answers