Product Notes
- 7919717 reads
It is also commonly used as a violet dye pH indicator, appearing yellow below pH 11, and violet above pH 13.
BLUE COLOUR DYE Reagent helpfull and can be use for DETECTION OF MG during salt analysis.
Dissolve the residue in a few drops of dil HCl and add 2-3ml water.
Take 1-2 drops of test solution in a spot plate and add 2-3 drops of magneson I reagent (4-(4-Nitrophenylazo)-resorcinol) and add 1 drop of 2M sodium hydroxide NaOH to make it alkaline. Blue colouration or blue precipitate is formed depending on the concentration of magnesium.
