Omega Chrome Fast Blue 2G: A new metal indicator for EDTA titrations

Summary Omega Chrome Fast Blue 2G was used as an indicator for the direct titration of calcium, magnesium, manganese and nickel. A displacement reaction was described for the titration of lead and cadmium. Fenugreek mucilage which is a colourless polysaccharide was used as medium for spot tests. The method is illustrated by spot tests for Ca, Mg, Mn, Ni, and Co. It has the advantage of sensitivity and simplicity.