dye|World dye variety

Name:C.I.Acid Red 31,C.I.16540

Molecular Structure: Single azo class

C.I.Acid Red 31,C.I.16540,CAS 5850-50-0,468.37,C16H10N2Na2O8S2,Azo Fuchsine G,DupontAzo Fuschine G

Molecular Formula:C₁₆H₁₀N₂Na₂O₈S₂

Molecular Weight: 468.37

CAS Registry Number:5850-50-0

Manufacturing Methods : 2-Aminobenzenesulfonic acid diazo, and 4,5Dihydroxynaphthalene-1-sulfonic acid coupling.

Properties and Applications: blue-ray red. Soluble in water for wine red, hardly soluble in alcohol. The strong sulfuric acid for dark purple, diluted red wine. In water solution to join strong hydrochloric acid for the red; Add sodium hydroxide into wine red to the deep red.

List of Suppliers:

Azo Fuchsine G( Bayer Group )
DupontAzo Fuschine G(Classic Dyestuffs Inc)