Name:C.I.Solvent Blue 49,C.I.50315
Molecular Structure: azine class
Molecular Weight: 670.69
CAS Registry Number:52218-73-2
Manufacturing Methods : 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