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Names | |
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Preferred IUPAC name
2,2′,2′′-Nitrilotriacetic acid[3] | |
Other names | |
Identifiers | |
3D model (JSmol)
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1710776 | |
ChEBI | |
ChemSpider | |
DrugBank | |
ECHA InfoCard | 100.004.869 |
EC Number |
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3726 | |
KEGG | |
MeSH | Nitrilotriacetic+Acid |
PubChem CID
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RTECS number |
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UNII |
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UN number | 2811 |
CompTox Dashboard (EPA)
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Properties | |
C6H9NO6 | |
Molar mass | 191.14 [4] |
Appearance | White crystals |
Melting point | 246[4] °C (475 °F; 519 K) |
Insoluble. <0.01 g/100 mL at 23°C [4] | |
Thermochemistry | |
Std enthalpy of
formation (ΔfH⦵298) |
−1.3130–−1.3108 MJ mol−1 |
Hazards | |
GHS labelling: | |
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Warning | |
H302, H319, H351 | |
P281, P305+P351+P338 | |
Flash point | 100 °C (212 °F; 373 K) |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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1.1 g kg−1 (oral, rat) |
Related compounds | |
Related alkanoic acids
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Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Nitrilotriacetic acid (NTA) is the aminopolycarboxylic acid with the formula N(CH2CO2H)3. It is a colourless solid. Its conjugate base nitrilotriacetate is used as a chelating agent for Ca2+, Co2+, Cu2+, and Fe3+.[5]
ChemBK
was invoked but never defined (see the help page).