21. A curious reaction occurs upon addition of concentrated sulfuric acid to potassium permanganate . 22. Oxalic acid and oxalates can be oxidized by permanganate in an autocatalytic reaction. 23. Later in the film he mentioned that potassium permanganate tablets were sometimes used. 24. Phenylglyoxylic acid can be synthesized by oxidation of mandelic acid with potassium permanganate . 25. This field was chosen to test how effectively permanganate could remove explosive contaminants. 26. China, in turn, provides 64 percent of Colombia's potassium permanganate . 27. Other popular bleach solutions use potassium dichromate ( a hexavalent chromium ) or permanganate . 28. It is the conjugate acid of permanganate salts. 29. Oxidants such as ozone, hydrogen peroxide, and potassium permanganate have been used. 30. One control method is to use odour-neutralizing chemicals such as potassium permanganate .
