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32319

Sigma-Aldrich

Diethylenetriaminepentaacetic acid

for complexometry, ≥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
Linear Formula:
[(HOOCCH2)2NCH2CH2]2NCH2COOH
CAS Number:
Molecular Weight:
393.35
Beilstein:
1810219
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

for complexometry

Quality Level

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.)

anion traces

chloride (Cl-): ≤1000 mg/kg
sulfate (SO42-): ≤200 mg/kg

cation traces

Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤10 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤500 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

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

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)

InChI key

QPCDCPDFJACHGM-UHFFFAOYSA-N

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This Item
D1133D65181505506
Pentetic acid United States Pharmacopeia (USP) Reference Standard

USP

1505506

Pentetic acid

mp

219-220 °C (lit.)

mp

219-220 °C (lit.)

mp

219-220 °C (lit.)

mp

219-220 °C (lit.)

cation traces

Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤10 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤500 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

cation traces

-

cation traces

-

cation traces

-

grade

for complexometry

grade

-

grade

-

grade

pharmaceutical primary standard

ign. residue

≤0.05% (as SO4)

ign. residue

-

ign. residue

-

ign. residue

-

loss

≤0.1% loss on drying, 20°C, HV

loss

-

loss

-

loss

-

General description

Visit our Titration Center to learn more.

Other Notes

Complexing agent for the chelation of iron in solution

Pictograms

Exclamation markHealth hazard

Signal Word

Danger

Hazard Classifications

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

Target Organs

Respiratory Tract

Storage Class Code

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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