Used chiefly in the manufacture of dyes,pigments and pharmaceuticals. M.F.:C11H8O3 M.W:188.06 SPECIFICATION: Quality IndexesDescriptionPrimeStandardAppearanceLight yellow powderContent,% min99.098.5Initial melting point of dry product,Deg.C min218217Insoluble in NaOH,% max0.100.102-Naphthol,% max0.500.50Ash,% max0.500.50Iron,PPM max50501-Hydroxy-2-Naphthoic Acid,% max0.50__