Molecular Structure: Single azo class
Molecular Weight: 509.42
CAS Registry Number:3734-67-6
Manufacturing Methods : aniline diazo, and 4-Acetamido-5-hydroxynaphthalene-2,7-disulfonic acid coupling.
Properties and Applications: colourful red blue light. Purple fine powder, odourless. Soluble in water for big red, slightly soluble in ethanol and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for blu-ray red, diluted into yellow red; In nitric acid solution for orange red, to orange; In strong hydrochloric acid for red precipitation, can be dissolved after diluted. Its water solution and strong hydrochloric acid for red; Add thick sodium hydroxide solution for orange brown. And C.I. Acid red 1 the same chemical structure.
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