Title: 1-Naphthylamine-5-sulfonic Acid
CAS Registry Number: 84-89-9
CAS Name: 5-Amino-1-naphthalenesulfonic acid
Additional Names: Laurent's acid
Molecular Formula: C10H9NO3S
Molecular Weight: 223.25
Percent Composition: C 53.80%, H 4.06%, N 6.27%, O 21.50%, S 14.36%
Literature References: Prepn from 5-chloro-1-naphthalenesulfonic acid + ammonia: Oehler, DE 72336 (1893); Frdl. 3, 435; from a-naphthylamine + concd sulfuric acid: Erdmann, Ann. 275, 193, 200 (1893); Sixma, Rec. Trav. Chim. 73, 235 (1954); from 2-naphthylamine-8-sulfonic acid: Blangey, Helv. Chim. Acta 39, 977 (1956).
Properties: White crystals. Sol in 950 parts cold water; more sol in hot water.
Use: In dye chemistry. |