Title: 2-Naphthoic Acid
CAS Registry Number: 93-09-4
CAS Name: 2-Naphthalenecarboxylic acid
Additional Names: b-naphthoic acid; isonaphthoic acid
Molecular Formula: C11H8O2
Molecular Weight: 172.18
Percent Composition: C 76.73%, H 4.68%, O 18.58%
Literature References: Prepn from b-acetylnaphthalene + NaOCl: Newman, Holmes, Org. Synth. coll. vol. II, 428 (1943); from naphthalene + octylsodium: Morton et al., J. Am. Chem. Soc. 64, 2250 (1942); from 2-aminonaphthalenesulfonic acid by Sandmeyer reaction: Wahl, Bassilios, Bull. Soc. Chim. Fr. 1947, 482; by carboxylation of naphthalene: Prichard, US 2729673 (1956 to du Pont).
Properties: Crystals from 95% alcohol, mp 184-185°. bp >300°. uv max (ethanol): 235, 280, 335 nm (log em 4.7, 3.8, 3.1). Slightly sol in hot water; sol in alcohol, ether.
Melting point: mp 184-185°
Boiling point: bp >300°
Absorption maximum: uv max (ethanol): 235, 280, 335 nm (log em 4.7, 3.8, 3.1)
CAUTION: Moderately irritating to skin, mucous membranes. |