dye|World dye variety

Name:C.I.Acid Black 41,C.I.20480

Molecular Structure: Double azo class

C.I.Acid Black 41,C.I.20480,CAS 5850-37-33,718.54,C22H13N6Na3O12S2,Acid Black 10BS

Molecular Formula:C₂₂H₁₃N₆Na₃O₁₂S₂

Molecular Weight: 718.54

CAS Registry Number:5850-37-33

Manufacturing Methods :  4-Nitrobenzenamine diazo, in acid conditions coupled with 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid, 4-Aminobenzenesulfonic acid to diazo, in alkaline conditions and formation of single accidentally coupled nitrogen compounds.

Properties and Applications: blue and black. Soluble in water as dark blue to blue-black, easily soluble in soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. The strong sulfuric acid for dark olive green to, diluted as dark blue precipitation; In nitric acid for green precipitation, and then into a chestnut; In 10% of sodium hydroxide solution for light blue solution. In water solution to join strong hydrochloric acid for dark blue; Add sodium hydroxide solution as dark blue.

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Acid Black 10BS ( Ciech SA )