Another name：nafto as; 2-hydroxy-3-naphthylaniline

English Name：Naphthol AS

Index number：Azoic Coupling Component 2(37505)

Molecular formula：C26H29NO3

Structural formula：

Molecular weight：263

Appearance：beige powder

Content：≥98.5%

Color light：similar to the standard

Strength, score：Standard100±three

Melting point of dry product：246℃

2.3 acid content：≤0.1%

Content of insoluble impurities in lye：≤0.15%

Usage: the most commonly used primer, widely used in cotton fabric dyeing and printing.