Question

how will you detect the presence of peroxide in the sample of ether?

Answer 1

Diethyl ether peroxides can be detected with a potassium iodide (KI) solution in acetic acid or potassium iodide / starch paper. A positive test results in the formation of iodine (I2) that causes a yellow or brown color of the ether phase or a dark bluish spot on the paper strip.

Answer 2

Take a few drops of ether sample in test tube and to this add freshly prepared FeSO4 solution followed by KCNS(potassium thiocyanate sulphate) . Blood red colouration indicates presence of peroxide.