Tetrasodium iminodisuccinate is a chelator that can also be found in laundry detergents, hand soaps, and dishwashing detergents. The word chelator (pronounced "key-lay-tor") comes from the Greek word chele, or claw. Think of a chelator as a tiny claw that reaches out and grabs the minerals in soap scum or soils to keep them from being deposited on a surface. We use tetrasodium iminodisuccinate in products to remove soap scum and mineral deposits. By binding to the soap scum or deposit, it allows either to be rinsed away.