A sequestering or chelating agent is a complex forming auxiliary chemical with metals such as Iron, Copper, Nickel, Zinc, and Magnesium that are present in water and affects the textile processing. There are many type of Sequestering agents 1) Type 1: Sugar Acrylate Sequesterants: Sugar Acrylate based, multifunctional auxiliary developed as an efficient sequestering, dispersing (protective colloid) and chelating agent for all stages in wet processing 2) Type 2: Concentrated iron sequestering agent for scouring and bleaching: It acts as a preferential chelating agent for iron impurities originating from textile goods or from the water thereby preventing catalytic damage and degradation of cotton. It prevents formation of pin-holes. 3) Type 3: Amino trimethylene phosphonic acid (ATMP) sequestering agent for scouring, bleaching and dyeing: It exhibits excellent sequestration of metal ions. It can be incorporated in various chemical water treatment, detergents and soaps. It can be used for bleaching of cellulosics and its blends. 4) Type 4: Diethylene triamine pentamethylene phosphonic (DETMP) acid sequestering agent:It exhibits excellent sequestration of metal ions. It is a very good peroxide bleach stabilizer for cellulosics and its blends. It is also used in leather chemicals. 5) Type 5: Organophosphonate (HEDP) sequestering agen: It has high calcium, magnesium and iron chelation value. It is mainly used in bleaching of cellulosics and its blends, preventing catalytic damage and pin holes.