... .26 3.C14H18N3O10Na5 4.CAS Number: 140-01-2 1.Pentasodium Diethylenetriaminepentaacetate, DTPA 5 Na2.Molecular Weight: 503.263.C14H18N3O10Na5 4 ... papermaking, textiles, food, medicine, agriculture, daily necessities, and other industries. Pentasodium Diethylenetriaminepentaacetate