I am testing chlorine in the pool water using a commercial kit and am interested in creating my own titration mixture. I am interested in standardizing sodium thosulphate as a titrant for Chlorine with iodine indicator.
The primary standard i have available to me is KHP.
I also have access to NaOH, KI, KMnO4, Oxalic Acid, sulfuric acid.
Per wikapedia: "Under normal conditions, acidification of solutions of this salt excess with even dilute acids results in complete decomposition to sulfur, sulfur dioxide, and water:"
Can i calibrate directly against KHP?
Any way to avoid release of SO2? I do not have a fume hood and would rather not be outside wearing a respirator... Neighbors already think i am crazy, no need to feed the rumors; not interested in earning the nickname Heisenberg either.
My target Cl in unknown sample (pool water) is 0-20ppm, so don't need super high concentration Sodium thiosulphate.