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.