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Details for China Naphthol AS

Naphthol AS 92-77-3

Category :

Dyestuffs and Pigments/Others

 Naphthol AS
CAS NO :
EC NO : 202-188-1
MF : C17H13NO2
MW : 263.295
Product description : Alias: 3-hydroxy-2-naphthoic acid Anilide CAS No. 92-77-3 Empirical molecular formula : C17H13NO2 molecular weight :263.29 Appearance: Beige powdery Shade :approximate Strength: 100 + / - 3% Content: 98.5% or higher Melting point: 247 ℃ or higher Alkali insoluble matter: ≤0.15% 2,3 acid content: ≤0.10% Sieve residue 60 mesh (or 80 mesh) ≤5% Application: Mainly used as an intermediate of organic pigment, it can produce pigment red 2, 21, 22, 32, 245, 258, 268;Pigment orange 24;Pigment purple 13, 17, 50;Pigment blue 20. This product is also a common base agent, widely used in cotton fabric dyeing and printing.When dyeing cotton, the affinity to cotton is low, the coupling ability is medium, the coupling PH value is determined according to the diazo composition of ice.It can also be used for dyeing cotton yarn, polyester/cotton, vinylon fiber, viscidity, silk and vinegar fiber, and can also be used for direct printing, printing with reactive dyes, anti-dyeing printing of cotton fabric, discharge printing, anti-dyeing printing of reactive dyes, as well as for producing fast pigment, Rapidogen and Repidazol dyes
Synonyms : C.I. 37505;C.I. Azoic Coupling Component 2;2-Naphthalenecarboxamide, 3-hydroxy-N-phenyl-;3-Hydroxy-2-naphthoic aicd anilide;Azoic CC2;C.I. Azoic Coupling Component No. 4;2-Hydroxy-3-Naphthanilide;3-hydroxy-N-phenylnaphthalene-2-carboxamide;
Molecular Structure :