Pigment Red 61
Name:C.I.Pigment Red 61,C.I.24830:1
Molecular Structure: Double azo
Molecular Formula:C43H36N4O14S4
Molecular Weight: 961.03
CAS Registry Number:1325-29-7
Manufacturing Methods :4-((4-Amino-2,5-dimethylphenyl)(phenyl)methyl)-2,5-dimethylbenzenamine double nitrogen, and 3-Hydroxynaphthalene-2,7-disulfonic acid (2 Moore) coupling, and then translate into barium salt.
Properties and Applications:brilliant blue light red. Soluble in water for dark red, not soluble in ethanol. In concentrated sulfuric acid to blue light red, red after diluted. Pigment aqueous solution with concentrated hydrochloric acid color unchanged; Join concentrated sodium hydroxide solution is a deep red. And C.I.Acid Red 65 chemical structure the same (barium salt).
List of Suppliers:
Brmiant Carmine L(IG Farbenindustrie AG)
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