C. I. SOLVENT BLUE 49)

C. I. SOLVENT BLUE 49) Chemische Eigenschaften,Einsatz,Produktion Methoden

• synthetische

  6,8-Bis(phenylamino)naphthalene-1-sulfonic acid and 5-Amino-2-(phenylamino)benzenesulfonic acid condensation, its product to (add) ammonia Cuprous oxide as catalyst for air oxidation.

• Properties and Applications

  red light blue. Soluble in water for blue, soluble in ethanol is purple, soluble in Cellosole, insoluble in benzene, toluene and Stout solvent. In concentrated sulfuric acid for green, dilution after red light blue; In concentrated nitric acid for deep purple. Dye aqueous solution to join sodium hydroxide for brown, with precipitation; Join hydrochloric acid for blue, with precipitation.
  

  Standard	Light Fastness	Heat-resistant(℃)		water	Sodium Carbonate (5%)	Hydrochloric acid (5%)
  		Melting point	Stable
  ISO	Good		200	Insoluble	Poor	Insoluble

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