Product Name : DTPA Pure Acid Chemical Name : Diethylene Triamine Penta Acetic acid , (Carboxymethylimino) bis (ethylenenitrilo) tetraacetic acid; DTPA; N,N-Bis (2- (bis- (carboxymethyl) amino) ethyl) - glycine; Pentetic acid CAS Nos. 67-43-6 Color & Physical Form ; White Powder Assay : Min 98 % pH (1 wt % solution): 2.5-3.5 Chelation value : 255 mg CaCo3 / g Product Name : Diethylene Triamine Penta Acetic acid (DTPA Acid) Formula : C14H23N3O10 CAS Nos. : 67-43-6 Molecular Weight : 393.2 Appearance : White Powder Assay : Min 98 % pH (1 wt % solution): 2.1- 2.5 Chelation value : 255 mg CaCo3 / g