3-Hydroxy-N-(4-methylphenyl)naphthalene-2-carboxamide

p-Methylaniline and 3-Hydroxy-2-naphthoic acid condensation.

red light yellow powder. Insoluble in water, but soluble in pyridine. The strong sulfuric acid and sodium hydroxide solution are yellow liquid, sodium carbonate in solution not dissolve. Melting point for 207 ~ 211 ℃, the air is stable. This product is brown and purplish red render agent, used for cotton, viscose and polyamide fiber dyeing and not used in printing of cotton, cotton to the high affinity.