Pentetic acid
DTPA: aminopolycarboxylic acid / From Wikipedia, the free encyclopedia
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For the combined diphtheria-tetanus-acellular pertussis vaccine used in Australia, see DTPa.
Pentetic acid or diethylenetriaminepentaacetic acid (DTPA) is an aminopolycarboxylic acid consisting of a diethylenetriamine backbone with five carboxymethyl groups. The molecule can be viewed as an expanded version of EDTA and is used similarly. It is a white solid with limited solubility in water.
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
N,N′-{[(Carboxymethyl)azanediyl]di(ethane-2,1-diyl)}bis[N-(carboxymethyl)glycine] | |
Systematic IUPAC name
2,2′,2′′,2′′′-{[(Carboxymethyl)azanediyl]bis(ethane-2,1-diylnitrilo)}tetraacetic acid | |
Other names
DTPA; H5dtpa; Diethylenetriaminepentaacetic acid; Penta(carboxymethyl)diethylenetriamine[1] | |
Identifiers | |
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3D model (JSmol) |
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ChEBI | |
ChEMBL | |
ChemSpider |
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ECHA InfoCard | 100.000.593 |
KEGG |
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PubChem CID |
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RTECS number |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C14H23N3O10 | |
Molar mass | 393.349 g·mol−1 |
Appearance | White crystalline solid |
Melting point | 220 °C (428 °F; 493 K) |
Boiling point | decomposes at a higher temp. |
<0.5 g/100 mL | |
Acidity (pKa) | ~1.80 (20 °C) [2] |
Hazards | |
Flash point | Non-flammable |
Related compounds | |
Related compounds |
EDTA, NTA |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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