Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 62-33-9, Whether you call it Ethylenediaminetetraacetic Acid Calcium Disodium Salt, Calcium Disodium EDTA , Edathamil or EDTA Calcium Disodium Salt you can be assured the Ethylenediaminetetraacetic Acid Calcium Disodium Salt products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.