hydroxynaphthoic acid

\(|)hī|dräksē+...-\ noun

: any of several crystalline acids C₁₀H₆(OH)COOH derived from the naphthols: as

a. : a yellow acid derived from beta-naphthol and used as an intermediate for azo dyes and pigments — called also beta-hydroxynaphthoic acid, 3-hydroxy-2-naphthoic acid; see dye table I (under Developer 8), naphthol AS

b. : a white to reddish acid derived from alpha-naphthol and used as an analytical reagent — called also 1-hydroxy-2-naphthoic acid