1-naphthalenesulfonic acid

1-naphthalenesulfonic acid

[¦wən ¦naf·thə‚lēn·səl′fän·ik ′as·əd]
(organic chemistry)
C10H8O3S A crystalline compound with a melting point of 90°C (dihydrate); soluble in water or alcohol; used to make α-naphthol.