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Sigma-Aldrich

Nitrilotriacetic acid

ACS reagent, ≥99.0%

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Synonym(s):
N,N-Bis(carboxymethyl)glycine, NTA, Tris(carboxymethyl)amine
Linear Formula:
N(CH2COOH)3
CAS Number:
139-13-9
Molecular Weight:
191.14
Beilstein:
1710776
EC Number:
205-355-7
MDL number:
MFCD00004287
UNSPSC Code:
12352100
PubChem Substance ID:
57652425
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

Assay

≥99.0% (T)
≥99.0%

form

powder

ign. residue

≤0.1% (as SO4)

loss

≤0.1% loss on drying

mp

245 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤100 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: ≤20 mg/kg
K: ≤50 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(CC(O)=O)CC(O)=O

InChI

1S/C6H9NO6/c8-4(9)1-7(2-5(10)11)3-6(12)13/h1-3H2,(H,8,9)(H,10,11)(H,12,13)

InChI key

MGFYIUFZLHCRTH-UHFFFAOYSA-N

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Related Categories

Application

An excellent chelating agent.

Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Warning

Hazard Statements

H302,H319,H351

Hazard Classifications

Acute Tox. 4 Oral - Carc. 2 - Eye Irrit. 2

WGK

WGK 2

Flash Point(F)

closed cup

Flash Point(C)

closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Eagleson M.
Concise Encyclopedia Chemistry, 253-253 (1994)
John I Njagi et al.
Journal of colloid and interface science, 421, 27-32 (2014-03-07)
We report for the first time that nitrilotriacetic acid (NTA) is an effective reductant for the preparation of stable dispersions of uniform gold nanoparticles. The method described is capable of generating stable sols with a metal concentration as high as
Li Jiang et al.
The Journal of pathology, 228(3), 366-377 (2012-08-07)
Exposure to asbestos is a risk for malignant mesothelioma (MM) in humans. Among the commercially used types of asbestos (chrysotile, crocidolite, and amosite), the carcinogenicity of chrysotile is not fully appreciated. Here, we show that all three asbestos types similarly
Hui Xu et al.
Biosensors & bioelectronics, 41, 90-95 (2012-09-11)
A label-free and highly sensitive impedimetric aptasensor was developed based on electropolymerized film for the determination of thrombin. The first step is the electrogeneration of a poly(pyrrole-nitrilotriacetic acid) (poly(pyrrole-NTA)) film onto the surface of electrodes followed by complexation of Cu(2+)
Matti F Pronker et al.
The Journal of biological chemistry, 290(24), 15092-15101 (2015-04-24)
Olfactomedin-1 (Olfm1; also known as noelin and pancortin) is a member of the olfactomedin domain-containing superfamily and a highly expressed neuronal glycoprotein important for nervous system development. It binds a number of secreted proteins and cell surface-bound receptors to induce
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