dye|World dye variety

Name:C.I.Acid Black 7,C.I.26300

Molecular Structure: Double azo class

C.I.Acid Black 7,C.I.26300,CAS 8004-59-9,655.61,C30H19N5Na2O6S2

Molecular Formula:C₃₀H₁₉N₅Na₂O₆S₂

Molecular Weight: 655.61

CAS Registry Number:8004-59-9

Manufacturing Methods : 4-Amino-2,6-naphthalenedisulfonic acid and 4-Aminonaphthalene-2,7-disulfonic acid diazo, and Naphthalen-1-amine coupling, its product to diazo, and Naphthalen-1-amine coupling.

Properties and Applications: black. Soluble in water and ethanol is a deep red. The strong sulfuric acid in blue or black for ash, after diluted red purple precipitation. In water solution to join strong hydrochloric acid is a deep red; Add thick sodium hydroxide solution for deep red.

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