Moderately toxic by ingestion.When heated to decomposition it emits toxic vapors ofNOx and SOx.
Purification Methods
Purify the aniline by fractional distillation in an inert atmosphere. The hydrochloride has m 242-246o (from aqueous EtOH/HCl). The sulfone has m 137o (from H2O), pK2 5 1.48, and the sulfone hydrochloride has m 260-261o (from aqueous EtOH/HCl). [Lumbroso & Passerini Bull Soc Chim Fr 311 1957, Mangini & Passerini J Chem Soc 4954 1956, Beilstein 13 H 533, 13 II 297, 13 IV 1221.]
