Diethylenetriamine pentaacetic acid (DTPA) is a potent amino polycarboxylic acid chelating agent composed of a diethylenetriamine backbone and five carboxyl groups. It forms stable complexes with various metal ions such as iron, copper, zinc, and cadmium. DTPA is widely used in water treatment, textile auxiliaries, the papermaking industry, pharmaceuticals (heavy metal detoxification), and rare earth separation. It exhibits excellent water solubility, stability across a wide pH range, and biodegradability.
| Chemical Name | Diethylenetriaminepentaacetic Acid |
| Chemical Formula | C14H23N3O10 |
| CAS | 67-43-6 |
| Appearance | White powder |
| Melting point | 219-220°C |
| Boiling point | 518°C |
| Density（ρ20）, g/cm³ | 1.56 g/cm³ |
| Molecular Weight | 393.35 |
| Solubility | It is readily soluble in hot water and alkaline solutions, slightly soluble in cold water, and insoluble in alcohol and ether. |
It can be applied as a color suppressant in acrylic fiber production, in the papermaking industry, as a water softener, a textile auxiliary, a complexometric titrant, in color photography, and in the food industry. It also finds extensive use in medical applications, rare earth element separation, and agricultural production.
This product should be stored in a sealed container in a cool, dry place away from light.
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