Quinaldic acid

Quinaldic acid is an organic chemical compound.^[1][2][3][4]

Quick facts Names, Identifiers ...

Quinaldic acid

Names
IUPAC name quinoline-2-carboxylic acid
Other names 2-Carboxyquinoline 2-Quinolinecarboxylic acid
Identifiers
CAS Number	93-10-7
3D model (JSmol)	Interactive image
Beilstein Reference	126322
ChEBI	CHEBI:18386
ChEMBL	ChEMBL1160559
DrugBank	DB02428
ECHA InfoCard	100.002.018
EC Number	202-218-3
Gmelin Reference	143145
KEGG	C06325
PubChem CID	7124
UNII	P90NWT719R
CompTox Dashboard (EPA)	DTXSID6059079
InChI InChI=1S/C10H7NO2/c12-10(13)9-6-5-7-3-1-2-4-8(7)11-9/h1-6H,(H,12,13) Key: LOAUVZALPPNFOQ-UHFFFAOYSA-N
SMILES C1=CC=C2C(=C1)C=CC(=N2)C(=O)O
Properties
Chemical formula	C10H7NO2
Molar mass	173.171 g·mol−1
Solubility in water	14000 mg/L
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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Quinaldic acid can form a zwitterion, where a proton is transferred from the carboxylic acid group to the nitrogen atom.^[5] Neptunium and uranium can form mixed ligand compounds with quinaldic acid.^[5]

Quinaldic acid has been used in the gravimetric analysis of uranium in the form of uranyl ion. This is precipitated by forming an insoluble salt with quinaldic acid. When incinerated U₃O₈ is formed and can be weighed.^[6]