6390. 1-Naphthol-2-sulfonic Acid

Nomenclature

CAS number: 567-18-0
1-Hydroxy-2-naphthalenesulfonic acid; Baum's acid; Schaeffer's α-acid.
C10H8O4S; mol wt 224.23.
C 53.56%, H 3.60%, O 28.54%, S 14.30%.

Description and references

Prepd by sulfonation of α-naphthol: Hodgson, Hathaway, J. Soc. Dyers Colour. 63, 109 (1947).

Chemical structure

Properties

Deliquesc crystals. Slightly sol in cold water; sol in boiling water. Practically insol in ether.