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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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