Australia's Science Forum

Does anyone know about the disposal of ferroxyl solution and also after the nail part?

What is the consensus on disposal of waste produced from reacting: a) dilute potassium dichromate (0.1M), sulfuric acid (0.05M) and potassium iodide (0.1M), with starch added as an iodine indicator (a black solid, presumably iodine complexed with the starch is present)? b) dilute potassium permangan...

Hi everyone, I just started a new job as lab tech and I've been having issues with chemical waste. The kids are dissolving copper sulphate in warm water and adding iron filings into the solution. We get a brown precipitate which I filtered and dried, but I'm not sure if I can dispose it in the rubbi...