Other Name: Basic Brilliant Blue 3RF, Basic Brilliant Blue B, Basic Blue B
Molecular Formula:C₃₃H₃₂ClN₃
Molecular Weight: 506.08
Manufacturing Methods : 4-(Dichloro(4-(diethylamino)phenyl)methyl)-N,N-diethylbenzenamine and  Naphthalen-1-amine condensation; (b) Bis (4 – (dimethylamino) phenyl) methanol and  Naphthalen-1-amine condensation, the product into N-and the nitro derivatives, and then oxidation, remove the nitro.
Properties and Applications: bright blue. Deep purple or celadon powder. Soluble in hot water and cold water for blue, soluble in ethanol also to blue. The strong sulfuric acid to red light brown, for yellow to green after diluted, and then into a blue. The dye solution to join sodium hydroxide deep red light brown precipitation. Used for silk, wool dyeing, also used in bamboo, wood, printing paper and ordinary paper shading, is used to make organic pigments and solvent dye.