Product Name EDTA Ca / Chelated Calcium Chemical Name Ethylenediaminetetraacetic acid, Calcium-disodium complex , Edetate calcium disodium; Calcium disodium ethylenediaminetetraacetate Cas No. 62-33-9 Color & Physical Form Off White Powder Assay 98 - 102% Calcium Content 10% (min.) as Ca pH (1 wt % solution) 6.5 7.5