2-amino-5-naphthol-7-sulfonic acid 11:52 AM Anonymous 2-amino-5-naphthol-7-sulfonic acid [ORG CHEM]C10H5NH2OHSO3H Gray or white nee-dles that are soluble in hot water; used as a dye intermediate. Email ThisBlogThis!Share to XShare to Facebook letter A / organic chemistry