dye|World dye variety

Name:C.I.Acid Black 27,C.I.26310

Molecular Structure: Double azo class

C.I.Acid Black 27,C.I.26310,CAS 6548-25-0,655.61,C30H19N5Na2O6S2,Biebrich Patent Black 4AN

Molecular Formula:C₃₀H₁₉N₅Na₂O₆S₂

Molecular Weight: 655.61

CAS Registry Number:6548-25-0

Manufacturing Methods : 4-Aminonaphthalene-1-sulfonic acid diazo, and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and Naphthalen-1-amine coupling.

Properties and Applications: brown light black. Soluble in water for deep red, slightly soluble in alcohol. The strong sulfuric acid for blue-black, diluted into a deep red. In water solution to join strong hydrochloric acid is a deep red; Add thick sodium hydroxide solution for deep red.

List of Suppliers:

Biebrich Patent Black 4AN( Kalle & Co. AG )