Dye|Dye intermediates|Fluorescent Brightener|pigment dye

Name:C.I.Pigment Red 63,C.I.15880

Molecular Structure: Double azo

C.I.Pigment Red 63,C.I.15880,CAS 21416-46-6,1325-13-9,466.38,C21H12N2Na2O6S

Molecular Formula:C₂₁H₁₂N₂Na₂O₆S

Molecular Weight: 466.38

CAS Registry Number:21416-46-6,1325-13-9

Manufacturing Methods :2-Aminonaphthalene-1-sulfonic acid diazotization, and 3-Hydroxy-2-naphthoic acid coupling.

Properties and Applications:red. Insoluble in water and difficult to soluble in ethanol. In concentrated sulfuric acid for blu-ray scarlet, dilution after brown light scarlet precipitation, in concentrated nitric acid for dark crimson; In concentrated sodium hydroxide solution for brown light red.

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Pigment Red 63(CPMA)