Iminodiacetic acid

Iminodiacetic acid
Names
	Preferred IUPAC name 2,2′-Azanediyldiacetic acid
	Other names 2-(Carboxymethylamino)acetic acid; Diglycolamidic acid
Identifiers
CAS Number	142-73-4 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	878499
ChEBI	CHEBI:24786 ;
ChEMBL	ChEMBL461164 ;
ChemSpider	8557 ;
ECHA InfoCard	100.005.051
EC Number	205-555-4;
KEGG	C19911 ;
MeSH	imnodiacetic+acid
PubChem CID	8897;
RTECS number	AI2975000;
UNII	XQM2L81M8Z ;
CompTox Dashboard (EPA)	DTXSID2027098 ;
	InChI InChI=1S/C4H7NO4/c6-3(7)1-5-2-4(8)9/h5H,1-2H2,(H,6,7)(H,8,9) Key: NBZBKCUXIYYUSX-UHFFFAOYSA-N ;
	SMILES OC(=O)CNCC(O)=O;
Properties
Chemical formula	C4H7NO4
Molar mass	133.103 g·mol−1
Appearance	Colourless crystals
Density	1.436 g mL−1
log P	1.84
Acidity (pKa)	1.873
Basicity (pKb)	12.124
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−933.9–−931.3 kJ mol−1
Std enthalpy of; combustion (ΔcH⦵298)	−1.6430–−1.6406 MJ mol−1
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P305+P351+P338
Flash point	178 °C (352 °F; 451 K)
Related compounds
Related alkanoic acids	Acetylcysteine; Glycylglycine; Nitrilotriacetic acid; N-Oxalylglycine; Tiopronin; Bucillamine; Oxalyldiaminopropionic acid;
Related compounds	N-Acetylglycinamide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Iminodiacetic acid is the organic compound with the formula HN(CH₂CO₂H)₂, often abbreviated to IDA. A white solid, the compound is a dicarboxylic acid amine (the nitrogen atom forms a secondary amino group, not an imino group as the name suggests). IDA is a popular chelating ligand, first introduced in the early 1950s by Schwarzenbach.