D.T.P.A. Na5 DTPA Penta Sodium Salt Liquid (DTPA Liquid) is a colorless to pale yellow slight viscous organic compound with a chemical formula of C14H18N3Na5O10.xH2O and average molar mass nearly equals to 503.25 grams per mol. The 1 percent aqueous solution of this industrial chemical is alkaline in nature with a pH value of 11 to 12. D.T.P.A. Na5 DTPA Penta Sodium Salt Liquid (DTPA Liquid) has a density of 1.260 - 1.310 grams per milliliters and a good shelf life of 60 months.