The Victoria Blue B, with the CAS registry number 2580-56-5 and EINECS registry number 219-943-6, has the systematic name of N-(4-{[4-(dimethylamino)phenyl][4-(phenylamino)naphthalen-1-yl]methylidene}cyclohexa-2,5-dien-1-ylidene)-N-methylmethanaminium chloride. It is a kind of deep purple powder, and soluble in hot water. And the molecular formula of this chemical is C₃₃H₃₂ClN₃.

The physical properties of Victoria Blue B are as following: (1)#H bond acceptors: 3; (2)#H bond donors: 1; (3)#Freely Rotating Bonds: 5; (4)Polar Surface Area: 18.28 Å².

Preparations of Victoria Blue B: It can start with the condensation of benzophenone, 4,4'-bis(dimethylamino) and N-phenyl-1-naphthylamine in the presence of phosphorus oxychloride. And after a series of hydrolyzation, purification, salting out, drying and pulverization, the product is obtained.

Uses of Victoria Blue B: It can used in the pigmentation of silk, wool, linen and tannin mordanting cotton fibre. It is also used in the pigmentation of stencil paper for type-writing, carbon paper and plain paper. What's more, it is also used in the preparation of color lake.

You should be cautious while dealing with this chemical. It irritates eyes, and also harmful if swallowed. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: [Cl-].C/[N+](C)=C1\C=C/C(C=C1)=C(\c4ccc(Nc2ccccc2)c3ccccc34)c5ccc(cc5)N(C)C
(2)InChI: InChI=1/C33H31N3.ClH/c1-35(2)27-18-14-24(15-19-27)33(25-16-20-28(21-17-25)36(3)4)31-22-23-32(30-13-9-8-12-29(30)31)34-26-10-6-5-7-11-26;/h5-23H,1-4H3;1H
(3)InChIKey: LLWJPGAKXJBKKA-UHFFFAOYAE