14 Metal Chelates

DTPA

DTPA

Metal Chelate

  • Product code
    D022  DTPA
  • CAS No.
    67-43-6
  • Chemical name
    Diethylenetriamine-N,N,N',N'',N''-pentaacetic acid
  • MW
    C14H23N3O10=393.35
Unit size Price Item Code
5 g $56.00 D022-10
25 g $170.00 D022-12
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Description

The stability constant of the DTPA-metal complex is the second highest, next only to the CyDTA-metal complex. DTPA is a free acid that has low solubility in water. DTPA is useful as a strong masking reagent. It is also used for the extraction of metal ions such as Al, Fe, Ma, Zn, Cu, Cd, and Ni from soil at pH 5.3.

Technical info

References

Open References

1. R. Pribil, et al., Determination of Rare Earths in the Presence of Phosphate. Chem Anal. 1967;56:23-24.
2. J. Kinnunen, et al., Rapid Determination of the Rare Earths in Phosphate Rock. Chem Anal. 1967;56:24-25.
3. J. Kinnunen, et al., Determination of Rare Earths in Phosphate Rock by Atomic Absorption Flame Photometry. Chem Anal. 1967;56:25-27.
4. W. A. Norvell, Comparison of Chelating Agents as Extractants for Metals in Diverse Soil Materials. Soil Sci Soc Am J. 1984;48:1285-1292.

Handling and storage condition

Specification
Purity (Titration): ≧ 99.0 %
Appearance: White powder
Solubility in NaOH solution: To pass test (clear, colorless)
Sulfated ash: ≦ 0.20 %
Lead (Pb): ≦ 0.001 %
Iron (Fe): ≦ 0.001 %
Handling and storage condition
Ambient temperature
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Product Classification

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