2-Naphthylamine-1-sulfonic Acid
Structural Formula Vector Image
Title: 2-Naphthylamine-1-sulfonic Acid
CAS Registry Number: 81-16-3
CAS Name: 2-Amino-1-naphthalenesulfonic acid
Additional Names: Tobias 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: Prepd by sulfonation of 2-naphthylamine: Tinker, Hansen, US 1969189 (1934 to du Pont). Utilization in viral biology study: N. Sakota et al., J. Ferment. Technol. 56, 53 (1978). TLC study: J. Franc, V. Koudelkova, J. Chromatogr. 170, 89 (1979).
Properties: Anhydr scales from hot water; hydrated needles from cold water. Slightly sol in cold water; more sol in hot water; very slightly sol in alcohol, ether.
Derivative Type: Diethylammonium salt
Molecular Formula: C10H9NO3S.(C2H5)2NH
Molecular Weight: 296.39
Percent Composition: C 56.73%, H 6.80%, N 9.45%, O 16.19%, S 10.82%
Properties: mp 180°.
Melting point: mp 180°
Use: Dyestuff intermediate.

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