Magneson is the indicator used to determine the presence of magnesium element in the solution. It is an azo dye which functions as the spot test reagent and forms a blue lake when reacted with in basic solution.
Magneson reagent used as colour indicator and detection of magnesium in salt compound. As magneson reagent reacts with magnesium and resulting blue precipitae. ... BLUE COLOUR DYE Reagent helpfull and can be use for DETECTION OF MG during salt analysis.