The Vat Blue 6, with the CAS registry number 130-20-1 and EINECS registry number 204-980-2, has the systematic name of 7,16-dichloro-6,15-dihydrodinaphtho[2,3-a:2',3'-h]phenazine-5,9,14,18-tetrone. And the molecular formula of this chemical is C₂₈H₁₂Cl₂N₂O₄. It belongs to the product category of Organics, and used for the dyeing and printing of cotton, viscose acetal fibre, silk and vinylon.

The physical properties of Vat Blue 6 are as following: (1)ACD/LogP: 7.48; (2)# of Rule of 5 Violations: 2; (3)ACD/LogD (pH 5.5): 7.48; (4)ACD/LogD (pH 7.4): 7.48; (5)ACD/BCF (pH 5.5): 285204.78; (6)ACD/BCF (pH 7.4): 285204.78; (7)ACD/KOC (pH 5.5): 279495.84; (8)ACD/KOC (pH 7.4): 279495.84; (9)#H bond acceptors: 6; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 74.76 Å²; (13)Index of Refraction: 1.746; (14)Molar Refractivity: 130.5 cm³; (15)Molar Volume: 321.3 cm³; (16)Polarizability: 51.73×10^-24cm³; (17)Surface Tension: 71.4 dyne/cm; (18)Density: 1.591 g/cm³; (19)Flash Point: 430.6 °C; (20)Enthalpy of Vaporization: 114.69 kJ/mol; (21)Boiling Point: 788.5 °C at 760 mmHg; (22)Vapour Pressure: 7.83E-25 mmHg at 25°C.

Preparation of Vat Blue 6: It can start with 2-amino-anthraquinone. Add sulfuric acid and manganese dioxide to make it dissolved ater alkaline fusion, and then pass chlorine to make it chlorinated. And then you can get the product after a series of crystallization, acid pickling, restore segregation, filtration, comminution and dryness.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C2c1c7c(c(Cl)cc1C(=O)c3ccccc23)Nc5c(c(Cl)cc4C(=O)c6c(C(=O)c45)cccc6)N7
(2)InChI: InChI=1/C28H12Cl2N2O4/c29-17-9-15-19(27(35)13-7-3-1-5-11(13)25(15)33)23-21(17)32-24-20-16(10-18(30)22(24)31-23)26(34)12-6-2-4-8-14(12)28(20)36/h1-10,31-32H
(3)InChIKey: UGCDBQWJXSAYIL-UHFFFAOYAY

The toxicity data is as follows: