What is a chelating resin?
Chelating resins have special functional groups which contain two or more electron donor atoms that can form coordinate bonds to a single metal atom. Classes of chelating functional groups of industrial importance are phosphonic acids, amino-, carboxylic acids and sulfur compounds. Resins that have metal chelating capabilities include those containing aminophosphonic acid or iminodiacetic acid or thiol sites. Resins containing an N-methylglucamine functionality are selective for boron.
