Naphthol AS

Usage Of Naphthol AS:

This product is mainly used as an intermediate of organic pigment, which can produce pigment red2, 21, 22, 32, 245, 258, 268, pigment orange 24, pigment violet 13, 17, 50, pigment blue 20.

This product is also commonly used as a primer, widely used in cotton fabric dyeing and printing. When cotton is dyed, its affinity to cotton is low, the coupling capacity is moderate, and the coupling pH value is determined according to the heavy nitrogen component of ice dyeing. Can also be used for cotton yarn, polyester/cotton, viscose, silk, vinylon fiber dyeing and vinegar, can also direct printing with reactive dyes, cotton fabric with India and resist printing, discharge printing, reactive dye color resist printing and used in the manufacture of fast fast fast sulfonyl amine hormone pigment, pigment.

CAS: 92-77-3

Chemical Formula: C₁₇H₁₃NO₂

Appearance: Beige powder

Color shade(with standard): similar

Strength: 100±3%

Purity: ≥98.5%

Melting point: ≥247℃

Insoluble in Alkali: ≤0.15%

BON acid content): ≤0.10%

Reidue on 60 Msieve(or 80 Masrequest): ≤5%