3190. 3,5-Diiodosalicylic Acid

Nomenclature

CAS number: 133-91-5
2-Hydroxy-3,5-diiodobenzoic acid.
C7H4I2O3; mol wt 389.91.
C 21.56%, H 1.03%, I 65.09%, O 12.31%.

Description and references

Prepn from salicylic acid and ICl: Woollett, Johnson, Org. Synth. coll. vol. II, 343 (1943); and iodine + H2O2: Jurd, Aust. J. Sci. Res. 3A, 587 (1950).

Chemical structure

Properties

Colorless, odorless needles or slightly yellow cryst powder. Sweetish, bitter taste. mp 235-236° dec. Sol in 5200 parts water at 25°; freely sol in alcohol, ether and most other organic solvents. Practically insol in CHCl3, benzene.

Derivative

Bismuth salt.

Nomenclature

Bijosal.

Description and references

Pollano, Minerva Med. 1930 I, 786; C.A. 24, 48547 (1930).

Derivative

Ethyl ester.

Nomenclature

Ethyl 3,5-diiodosalicylate.
C9H8I2O3; mol wt 417.97.
C 25.86%, H 1.93%, I 60.72%, O 11.48%.

Properties

Crystals, mp 133°. Practically insol in H2O. Sol in alc, ether, benzene.

Use

As I2 source in foods; in animal feeds as growth promotant.