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Naphthol AS-PH

Items:Naphthol AS-PH

C.I. 37558

CAS: 92-74-0

Chemical Formula:C₁₉H₁₇NO₃

Appearance: Light beige brown powder

Color shade(with standard):similar

Strength:100±3%

Purity:=98%

Melting point:=155?

Insoluble in Alkali:=0.4%

BON acid content:=0.4%

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

Use: This product is mainly used as organic pigment intermediate. It can produce pigment red 170,pigment orange 22. This product can also be used for dyeing cotton yarn, cotton fabric, vinylon, cotton fibers, viscose and silk and it is generally not used for printing. This product has low affinity to cotton and moderate coupling ability.