Alias：nafto as-d
English Name：naphthol as-d
Index number：c.i.azoic coupling component 18 (37520)
Molecular formula：c18h15no2
Structural formula：
Molecular weight: 277
Appearance：beige powder
Content：≥98.5%
Color light: similar to the standard
Strength, score：Standard 100±three
Melting point of dry product：194℃
2.3 acid content：≤0.1%
Content of insoluble impurities in lye:≤0.15%
Uses: it is mainly used as a base agent for dyeing and printing of cotton fabric, and as an intermediate of fast pigment and organic pigment.