Red 18 CAS 6483-64-3

Introduction

1,1′-[(phenylmethylene)bis[(2-methoxy-4,1-phenyl)azo]]di-2-naphthol, also known as AO60, is an organic synthetic dye. The following is an introduction to its nature, use, preparation method and safety information:

Properties: AO60 is a yellow to reddish-brown crystalline powder, insoluble in water, soluble in organic solvents such as methanol, ethanol and chloroform. It is stable in acidic, neutral and alkaline conditions.

Uses: AO60 is mainly used as a dye and indicator. It can be used as a dyeing agent for textiles, especially for the dyeing effect of natural fibers such as cotton and linen. It can also be used for coloring plastics and rubber. It is also commonly used as an acid-base indicator and for pH determination.

Preparation method: The preparation of AO60 is generally obtained by coupling reaction of nitrous acid and styrene, and then reacted with 2-naphthol to form the target product.