4'-Chloro-3-hydroxy-2'-methyl-2-naphthanilide

Preparation

4-Chloro-2-methylbenzenamine and 3-Hydroxy-2-naphthoic acid condensation.

Properties and Applications

deep cream-colored powder. Insoluble in water and sodium carbonate solution, soluble in pyridine. For close to a colorless sulfuric acid in the solution; In sodium hydroxide solution for rice in. Melting point for 244 ~ 245 ℃, of air sensitive. This product is mainly used for cotton yarn dyed orange, red, red, red, blue, red, navy used the render of agent, suitable for cotton, viscose, silk, polyamide fiber or vinegar of dyeing, also can be used for printing of cotton. To cotton affinity medium.

Purification Methods

Crystallise it from xylene [Schnopper et al. Anal Chem 31 1542 1959].