# Can I use an acid other than sulfuric for hydrogen peroxide determination?

I would like to perform a permanganometric titration of hydrogen peroxide at home following a procedure similar to http://www.titrations.info/permanganate-titration-hydrogen-peroxide, i.e. the reaction:

2MnO4- + 5H2O2 + 6H+ → 2Mn2+ + 5O2 + 8H2O

I do not have sulfuric acid or a licence. Can I use any other acids? I think HCl would release chlorine, and other than that I only have weak household acids such as acetic, ascorbic, citric and tartaric to hand. I can probably get hold of others, but sulfuric is regulated as an explosives precursor here.

• If you use an organic acid, you will probably oxidize this acid with permanganate, with or without $\ce{H_2O_2}$. If you are not allowed to use sulfuric acid, why don't you use phosphoric acid $\ce{H_3PO_4}$? Mar 25, 2020 at 17:08
• Thanks. That's exactly the sort of thing I'm looking for. Would there be any extra interactions between phosphoric acid and the H<sub>2</sub>O<sub>2</sub>?
– eisd
Mar 25, 2020 at 17:54
• No, phosphoric acid is notmoxidisable as P is at its highest oxidation state Mar 25, 2020 at 19:33
• You could also use Nitric acid, although concentrated nitric acid is rather corrosive and produces horrible fumes. Plus, if I'd expect any acid to be labeled as an explosives precursor, It'd be nitric. Mar 27, 2020 at 21:11
• I would like to accept your comment as the answer, @Maurice.
– eisd
Apr 13, 2020 at 12:35