| Customization: | Available |
|---|---|
| CAS No.: | 67-43-6 |
| Formula: | C14h23o10n3 |
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DTPA Diethylenetriaminepentaacetic Acid
Product introduction
Product name: DTPA
Classification: Diethylenetriaminepentaacetic acid
CAS No.: 67-43-6
Other Names: Pentetic acid
MF: C14H23O10N3
Purity: ≥99.0%
Certificate of Analysis
| Items | Specification | Results |
| Physical Appearance | White crystal powder | PASS |
| Purity | ≥ 99% | 99.2% |
| Cl | ≤ 0.01 % | < 0.001% |
| SO42- | ≤ 0.05 | < 0.005% |
| Pb | ≤ 0.001% | Not detective |
| Fe | ≤ 0.001% | Not detective |
| Loss on drying | ≤ 0.2% | < 0.16% |
| Chelating value(mgCaCO3/g PH=11) | ≥ 252 | 267 |
| PH | 2.1-2.5 | 2.3 |
Product description
DTPA is a white crystal powder. The conjugate base of DTPA has a high affinity for metal cations. Thus, the penta-anion DTPA5− is potentially an octadentate ligand assuming that each nitrogen centre and each COO−-group counts as a centre for coordination. The formation constants for its complexes are about 100 greater than those for EDTA.
As a chelating agent, DTPA wraps around a metal ion by forming up to eight bonds. Transition metals, however, usually form less than eight coordination bonds. So, after forming a complex with a metal, DTPA still has the ability to bind to other reagents, as is shown by its derivative pendetide. For example, in its complex with copper(II), DTPA binds in a hexadentate manner utilizing the three amine centres and three of the five carboxylates.
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Certificate & Exhibition
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