3023. 3,5-Dibromo-4-hydroxybenzenesulfonic Acid

Nomenclature

CAS number: 4232-99-9
2,6-Dibromophenol-4-sulfonic acid; p-hydroxy-3,5-dibromobenzenesulfonic acid.
C6H4Br2O4S; mol wt 331.97.
C 21.71%, H 1.21%, Br 48.14%, O 19.28%, S 9.66%.

Description and references

Prepn: Senhofer, Ann. 156, 103 (1870); Armstrong, Brown, J. Chem. Soc. 25, 858 (1872). Prepn of the sodium salt: Cannell, J. Am. Chem. Soc. 79, 2927 (1957).

Chemical structure

Properties

Rectangular platelets. Freely sol in water, alcohol; less sol in ether.

Derivative

Sodium salt dihydrate.

Nomenclature

Dibromol (Trommsdorff).
C6H3Br2NaO4S.2H2O; mol wt 389.98.
C 18.48%, H 1.81%, Br 40.98%, Na 5.90%, O 24.62%, S 8.22%.

Properties

Needles. Freely sol in hot water, less sol in cold water.

Therapeutic Category

Disinfectant.