Iodobenzoic acid

Iodobenzoic acids are any of three organic compounds with the formula IC₆H₄COOH, consisting of a carboxylic acid group and an iodine atom bonded to a central benzene ring. They can be considered as iodinated derivatives of benzoic acid, or as carboxylated variants of iodobenzene.

Iodobenzoic acid isomers
Common name and systematic name	2-Iodobenzoic acid[1]	3-Iodobenzoic acid[2]	4-Iodobenzoic acid[3]
Structure
Molecular formula	C7H5IO2 (IC6H4COOH)
Molar mass	248.018 g/mol
Appearance	white solid	white solid	white solid
CAS number	[88-67-5]	[618-51-9]	[619-58-9]
Properties
Density and phase	2.25 g/ml, solid		2.18 g/ml, solid
Solubility in water	practically insoluble
Melting point	162 °C	185–187 °C	270–273 °C

References

1. "2-Iodobenzoic acid". PubChem. Retrieved 2022-11-27.
2. "3-Iodobenzoic acid". ChemSpider. Retrieved 5 January 2024.
3. "4-Iodobenzoic acid". PubChem. Retrieved 2023-01-21.