Molecular Structure:

Product description: Product name: Naphthol AS-D C.I. 37520 CAS: 135-61-5 Chemical name: 3-hydroxy-N - (2-methyl-phenyl) -2-naphthoformamide Molecular formula: C18H15NO2 Formula: Appearance: Light rice brown powder Shade: approximate Strength: 100 + / - 3% Content: 98% or higher Melting point: 190 ℃ or higher Alkali insoluble substance: ≤0.5% 2,3 acid content: ≤0.2% Sieve residue 60 mesh (or 80 mesh) ≤5% Application: This product is mainly used as an intermediate of organic pigment, which can produce pigment red 12, 13, 14, 17, 19, 95, 112, 136, 148, 253, 267.This product can also be used for dyeing cotton yarn, cotton fabric, vinylon, viscidity, silk and vinegar fiber, as well as for direct printing, dye-proof printing and discharge printing of cotton cloth, and as an intermediate for fast pigment.The affinity to cotton is low, the coupling ability is medium.