Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 20824-56-0, Whether you call it Ethylenediaminetetraacetate Acid Diammonium Dihydrogen Salt, Diammonium Dihydrogen Ethylenediaminetetraacetate or Diammonium EDTA you can be assured the Ethylenediaminetetraacetate Acid Diammonium Dihydrogen Salt products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.