Product name: Naphthol AS-BO C. I.NO(37560) C A S: 132-68-3 Chemical name: 3-hydroxy-N - (1-naphthyl) -2-naphthyl formamide Subformula: C21H15NO2 Structure. Type: Exterior: Beige powdery Shade: approximate C: 100 + / - 3% Including: 98.5% or higher Melting point: 215 ℃ or higher Alkali insoluble substance: ≤0.2% 2,3 acid content: ≤0.20% Sieve residue 60 mesh (or 80 mesh) ≤5% Application: mainly used for dyeing cotton yarn, cotton fabric, cotton knitting, corduroy, Vinylon, viscose, silk and cotton-fibre, generally not used for printing.This product has a high affinity for cotton and medium coupling ability.It can be used to make fast pigments, neutrins and organic pigments. Synthetic pigment: P.R.16, P.R.134

CAS NO:132-68-3

EC NO:205-075-5

Molecular Formula:C₂₁H₁₅NO₂

Molecular Weight:313.3493

Synonyms:;C.I. Azoic Coupling Component 4;C.I.Azoic Coupling Component 4;3-hydroxy-N-1-naphthyl-2-naphthamide;2-Hydroxy-3-Naphthoyl-1-Naphthamide;3-hydroxy-N-(naphthalen-1-yl)naphthalene-2-carboxamide;3-Hydroxy-N-Naphthalen-1-Ylnaphthalene-2-Carboxamide;

Molecular Structure: