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Ethylenediaminetetraacetic acid
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API
2-({2-ethyl}(carboxymethyl)amino)acetic acid
Diaminoethane-tetraacetic acid
Edetic acid
Ethylenedinitrilo-tetraacetic acid
Versene
Identifiers
Abbreviations
EDTA, H4EDTA
CAS number
60-00-4 Y
PubChem
6049
ChemSpider
5826 Y
UNII
9G34HU7RV0 Y
EC number
200-449-4
UN number
3077
DrugBank
DB00974
KEGG
D00052 Y
MeSH
Edetic+Acid
ChEBI
CHEBI:42191 Y
ChEMBL
CHEMBL858 Y
RTECS number
AH4025000
ATC code
S01XA05,V03AB03 (salts)
Beilstein Reference
1716295
Gmelin Reference
144943
Jmol-3D images
Image 1
Image 2
:c(:)CN(CCN(Cc(:):)Cc(:):)Cc(:):
OC(=O)CN(CCN(CC(O)=O)CC(O)=O)CC(O)=O
InChI=1S/C10H16N2O8/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20) Y
Key: KCXVZYZYPLLWCC-UHFFFAOYSA-N Y
Properties
Molecular formula
C10H16N2O8
Molar mass
292.24 g mol-1
Appearance
Colourless crystals
Density
860 mg mL-1 (at 20 °C)
log P
-0.836
Acidity (pKa)
1.782
Basicity (pKb)
12.215
Thermochemistry
Std enthalpy of
formation ?fHo298
-1.7654–-1.7580 MJ mol-1
Std enthalpy of
combustion ?cHo298
-4.4617–-4.4545 MJ mol-1
Pharmacology
Routes of
administration
Intramuscular
Intravenous
Hazards
GHS pictograms
GHS signal word
WARNING
GHS hazard statements
H319
GHS precautionary statements
P305+351+338
EU Index
607-429-00-8
EU classification
Xi
R-phrases
R36
S-phrases
(S2), S26
NFPA 704
LD50
1000 mg/kg (oral, rat)
Related compounds
Related alkanoic acids
Daminozide
Octopine
Related compounds
Triethylenetetramine
Tetraacetylethylenediamine
PMDTA
Bis-tris propane
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Y (verify) (what is: Y/N?)
Infobox references
Ethylenediaminetetraacetic acid, widely abbreviated as EDTA (for other names, see Table), is an aminopolycarboxylic acid and a colourless, water-soluble solid. Its conjugate base is named ethylenediaminetetraacetate. It is widely used to dissolve limescale. Its usefulness arises because of its role as a hexadentate ("six-toothed") ligand and chelating agent, i.e. its ability to "sequester" metal ions such as Ca2+ and Fe3+. After being bound by EDTA, metal ions remain in solution but exhibit diminished reactivity. EDTA is produced as several salts, notably disodium EDTA and calcium disodium EDTA.
^ http://chem.sis.nlm.nih.gov/chemidplus/rn/62-33-9
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