E 1508 (OTTO) Ethylenediaminetetraacetic acid disodium magnesium salt, 98.5% Cas 14402-88-1 - used in organic synthesis, pharmaceuticals and agrochemicals. E 1508 (OTTO) Ethylenediaminetetraacetic acid disodium magnesium salt, 98.5% Cas 14402-88-1 - used as chelating agents over a broad pH range in aqueous systems.