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Merck
CN

32318

Diethylenetriaminepentaacetic acid

≥99.0%

Synonym(s):

(Carboxymethylimino)bis(ethylenenitrilo)tetraacetic acid, N,N-Bis(2-[bis(carboxymethyl)amino]ethyl)glycine, DETAPAC, DTPA, Penta(carboxymethyl)diethylenetriamine, Pentetic acid

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About This Item

Linear Formula:
[(HOOCCH2)2NCH2CH2]2NCH2COOH
CAS Number:
67-43-6
Molecular Weight:
393.35
EC Number:
200-652-8
UNSPSC Code:
12352200
PubChem Substance ID:
24859222
Beilstein/REAXYS Number:
1810219
MDL number:
MFCD00004289

Key Documents

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Product Name

Diethylenetriaminepentaacetic acid, ≥99.0%

InChI key

QPCDCPDFJACHGM-UHFFFAOYSA-N

InChI

1S/C14H23N3O10/c18-10(19)5-15(1-3-16(6-11(20)21)7-12(22)23)2-4-17(8-13(24)25)9-14(26)27/h1-9H2,(H,18,19)(H,20,21)(H,22,23)(H,24,25)(H,26,27)

SMILES string

OC(=O)CN(CCN(CC(O)=O)CC(O)=O)CCN(CC(O)=O)CC(O)=O

assay

≥99.0% (KT)
≥99.0%

ign. residue

≤0.05% (as SO4)

loss

≤0.1% loss on drying, 20 °C (HV)

mp

219-220 °C (lit.)

solubility

0.1 M NaOH: 0.1 M at 20 °C, clear, colorless

suitability

suitable for suitability for complexometry

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General description

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Other Notes

Preparation of the complexes: Na2Fe(DTPA)], Na2(Cr(DTPA)) and H2[Gd(DTPA)], which have been found to function extremely well as water soluble paramagnetic relaxation reagents for 13C NMR spectroscopy

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Eye Irrit. 2 - Repr. 1B - STOT RE 2 Inhalation

target_organs

Respiratory Tract

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 2

flash_point_f

392.0 °F - closed cup

flash_point_c

200 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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T.J. Wenzel et al.
Analytical Chemistry, 54, 615-615 (1982)
Sébastien Leguay et al.
Inorganic chemistry, 51(23), 12638-12649 (2012-11-17)
Complexation of trivalent actinides with DTPA (diethylenetriamine pentaacetic acid) was studied as a function of pcH and temperature in (Na,H)Cl medium of 0.1 M ionic strength. Formation constants of both complexes AnHDTPA(-) and AnDTPA(2-) (where An stands for Am, Cm
Cerebral perfusion scintigraphy study as confirmation test of brain death in the process of organ donation for transplant.
J Banzo et al.
Revista espanola de medicina nuclear e imagen molecular, 31(5), 278-285 (2012-10-17)
Katsuhiko Sueda et al.
Health physics, 105(2), 208-214 (2013-06-27)
Diethylenetriaminepentaacetic acid (DTPA) is a chelating agent that is used to facilitate the elimination of radionuclides such as americium from contaminated individuals. Its primary site of action is in the blood, where it competes with various biological ligands, including transferrin
Justin Hoffman et al.
Bioconjugate chemistry, 23(10), 2098-2104 (2012-09-22)
Protease activated receptor-2 (PAR(2)) is one of four G-protein coupled receptors (GPCRs) that can be activated by exogenous or endogenous proteases, which cleave the extracellular amino-terminus to expose a tethered ligand and subsequent G-protein signaling. Alternatively, PAR(2) can be activated
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